JPH0827627A - Production of starch fiber - Google Patents
Production of starch fiberInfo
- Publication number
- JPH0827627A JPH0827627A JP15467294A JP15467294A JPH0827627A JP H0827627 A JPH0827627 A JP H0827627A JP 15467294 A JP15467294 A JP 15467294A JP 15467294 A JP15467294 A JP 15467294A JP H0827627 A JPH0827627 A JP H0827627A
- Authority
- JP
- Japan
- Prior art keywords
- starch
- fibers
- fiber
- fiber length
- spinnable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002472 Starch Polymers 0.000 title claims abstract description 138
- 235000019698 starch Nutrition 0.000 title claims abstract description 138
- 239000008107 starch Substances 0.000 title claims abstract description 135
- 239000000835 fiber Substances 0.000 title claims abstract description 96
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000001246 colloidal dispersion Methods 0.000 claims abstract description 14
- 238000009987 spinning Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920001592 potato starch Polymers 0.000 claims abstract description 7
- 229920002261 Corn starch Polymers 0.000 claims abstract description 5
- 239000008120 corn starch Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 240000006394 Sorghum bicolor Species 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 24
- 230000015271 coagulation Effects 0.000 description 23
- 238000005345 coagulation Methods 0.000 description 23
- 238000000034 method Methods 0.000 description 18
- 238000009826 distribution Methods 0.000 description 12
- 240000008042 Zea mays Species 0.000 description 10
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 10
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 10
- 235000005822 corn Nutrition 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 9
- 244000061456 Solanum tuberosum Species 0.000 description 8
- 235000002595 Solanum tuberosum Nutrition 0.000 description 8
- 230000001112 coagulating effect Effects 0.000 description 8
- 238000012937 correction Methods 0.000 description 8
- 241000894007 species Species 0.000 description 8
- 239000007900 aqueous suspension Substances 0.000 description 7
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 6
- 235000011130 ammonium sulphate Nutrition 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000001000 micrograph Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 240000004270 Colocasia esculenta var. antiquorum Species 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 244000062793 Sorghum vulgare Species 0.000 description 3
- 235000004879 dioscorea Nutrition 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000019713 millet Nutrition 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 244000205754 Colocasia esculenta Species 0.000 description 2
- 235000006481 Colocasia esculenta Nutrition 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 240000003183 Manihot esculenta Species 0.000 description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000004931 aggregating effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002166 wet spinning Methods 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 244000075850 Avena orientalis Species 0.000 description 1
- 235000002723 Dioscorea alata Nutrition 0.000 description 1
- 235000007056 Dioscorea composita Nutrition 0.000 description 1
- 235000009723 Dioscorea convolvulacea Nutrition 0.000 description 1
- 235000005362 Dioscorea floribunda Nutrition 0.000 description 1
- 235000004868 Dioscorea macrostachya Nutrition 0.000 description 1
- 235000005361 Dioscorea nummularia Nutrition 0.000 description 1
- 235000005360 Dioscorea spiculiflora Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- 235000006350 Ipomoea batatas var. batatas Nutrition 0.000 description 1
- 244000131360 Morinda citrifolia Species 0.000 description 1
- 235000008898 Morinda citrifolia Nutrition 0.000 description 1
- 235000008248 Morinda citrifolia var citrifolia Nutrition 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 241000209056 Secale Species 0.000 description 1
- 235000007238 Secale cereale Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000011086 glassine Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000017524 noni Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はデンプン繊維の製造方
法に関し、より詳しくは、用途に応じて任意の平均繊維
長を有するデンプン繊維を得ることができる、新規かつ
改良されたデンプン繊維の製造方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing starch fibers, and more particularly to a novel and improved method for producing starch fibers, which can obtain starch fibers having an arbitrary average fiber length depending on the application. It is about.
【０００２】[0002]
【従来の技術】デンプンをパルプ状にしたデンプン繊維
は、例えば木材パルプの全部または一部の代替材料とし
て従来から使用されており、木材パルプに混合して抄紙
することにより紙の強度特性を改善したり、抄紙時に使
用する内添薬品の保持率を向上する等の効果が得られて
いる。またデンプン繊維の透明性を利用してグラシン紙
の製造に際しても木材パルプと混合使用されている。2. Description of the Related Art Starch pulp made from starch is conventionally used as a substitute material for all or part of wood pulp, for example, and it is mixed with wood pulp to improve the strength properties of paper. And the effect of improving the retention rate of internally added chemicals used at the time of paper making is obtained. It is also used as a mixture with wood pulp in the production of glassine paper by utilizing the transparency of starch fibers.
【０００３】かようなデンプン繊維の製造方法として
は、デンプンの水懸濁液を加熱あるいはアルカリ処理し
てデンプンのコロイド分散液とし、これを硫酸アンモニ
ウム等の水溶液からなる凝固浴中に糸状の流れにして押
出して凝固させる方法や、デンプン水懸濁液をジェット
・クッキング法により煮沸溶解したデンプンコロイド分
散液を凝固浴中で凝固させる方法等が種々提案されてい
る（例えば米国特許第４１３９６９９号、イタリア特許
出願９１Ａ０００６１０号、特公昭６０−３５４６０号
等）。As a method for producing such starch fibers, an aqueous suspension of starch is heated or treated with an alkali to form a colloidal dispersion of starch, which is made into a filamentous flow in a coagulation bath consisting of an aqueous solution of ammonium sulfate or the like. Various methods have been proposed (eg, US Pat. No. 4,139,699, Italy) in which a starch colloidal dispersion obtained by boiling and dissolving a starch aqueous suspension by boiling is coagulated in a coagulation bath. Patent application 91A000610, Japanese Patent Publication No. 60-35460, etc.).
【０００４】[0004]
【発明が解決しようとする課題】上述した従来の製造方
法で得られるデンプン繊維の繊維長としては、例えばイ
タリア特許出願９１Ａ０００６１０号では１ｍｍ未満、
特公昭６０−３５４６０号では０．１〜３．０ｍｍと記
載されている。しかしながら、デンプン繊維を例えば製
紙分野に利用する場合には、繊維長が極端に短ければ抄
紙時にワイヤーから抜けてしまい本来の目的が達成でき
ず、一方、繊維長が長すぎても繊維同志が結束したまま
抄き込まれてしまうという不都合が生じる。The fiber length of the starch fiber obtained by the above-mentioned conventional production method is, for example, less than 1 mm in Italian Patent Application 91A000610,
In Japanese Examined Patent Publication No. 60-35460, it is described as 0.1 to 3.0 mm. However, when starch fibers are used in the field of papermaking, for example, if the fiber length is extremely short, the fibers will fall out of the wire during papermaking and the original purpose cannot be achieved.On the other hand, if the fiber length is too long, the fibers will bind together. There is the inconvenience that the paper will be cut as it is.
【０００５】また、デンプン繊維の透明性を利用する用
途の場合には、デンプン繊維の繊維長の違いによって得
られる透明性も変化してくることが考えられる。In addition, in the case of applications where the transparency of starch fibers is utilized, it is considered that the obtained transparency may change depending on the difference in fiber length of starch fibers.
【０００６】このように、目的に応じて任意の繊維長を
有するデンプン繊維を使用できれば、本来の使用目的が
効果的に達成でき、さらには今まで考えられなかった効
果が生じることも期待できる。[0006] Thus, if starch fibers having an arbitrary fiber length can be used according to the purpose, it can be expected that the original purpose of use can be effectively achieved, and further, an effect which has not been conceived up to now can be produced.
【０００７】そこでこの発明は、必要に応じて繊維長を
任意に制御することができるデンプン繊維の製造方法を
提供することを目的としてなされたものである。[0007] Therefore, the present invention has been made for the purpose of providing a method for producing a starch fiber in which the fiber length can be arbitrarily controlled as required.
【０００８】[0008]
【課題を解決するための手段】本発明者は鋭意検討の結
果、天然のデンプンには曳糸性のある種とそうでない種
とがあり、それぞれ繊維長の長いデンプン繊維および短
いデンプン繊維をもたらすこと、さらに両方の種を適宜
割合に混合した原料を用いることにより、混合比率に応
じて特有の繊維長分布を有するデンプン繊維が得られる
ことを見いだし、この発明を完成させたものである。Means for Solving the Problems As a result of diligent studies, the present inventor has found that natural starch has a spinnable species and a non-spinnable species, which results in long-fiber starch fibers and short-fiber starch fibers, respectively. It was found that starch fibers having a unique fiber length distribution can be obtained according to the mixing ratio by using a raw material in which both species are mixed in an appropriate ratio, and the present invention has been completed.
【０００９】すなわちこの発明は、デンプンのコロイド
分散液を紡糸することによってデンプン繊維を製造する
方法において、原料デンプンとして曳糸性のあるデンプ
ンと曳糸性のないデンプンとの混合物を使用し、両者の
混合比率を変えることによりデンプン繊維の平均繊維長
分布を制御することを特徴とするデンプン繊維の製造方
法である。That is, the present invention uses a mixture of spinnable starch and non-spinnable starch as a raw material starch in a method for producing starch fibers by spinning a colloidal dispersion of starch. The method for producing starch fibers is characterized in that the average fiber length distribution of the starch fibers is controlled by changing the mixing ratio of.
【００１０】この発明において、曳糸性のあるデンプン
とは、下記の方法によりデンプン繊維を調製した場合
に、平均繊維長分布が約１ｍｍ以下のデンプン繊維が得
られるものをいい、曳糸性のないデンプンとは、平均繊
維長分布が約１５ｍｍ以上のデンプン繊維が得られるも
のをいう。In the present invention, the spinnable starch means a starch fiber having an average fiber length distribution of about 1 mm or less when the starch fiber is prepared by the following method. The non-starch means a starch fiber having an average fiber length distribution of about 15 mm or more.
【００１１】曳糸性の有無を調べるためのデンプン繊維
の調製方法は、まずデンプンの１０重量％水懸濁液を調
製し、これを９５℃に加熱・膨潤させてデンプンのコロ
イド分散液とする。この分散液を５５℃の一定温度とし
て、凝固浴中に設置した口径０．４ｍｍのノズルから吐
出圧力３Ｋｇ／ｃｍ2 で凝固浴中に吐出させる。凝固浴
中の凝固液には硫酸アンモニウムの４０重量％水溶液を
使用し、凝固浴を撹拌してデンプン分散液の吐出方向と
凝固液の流れ方向が約４５°の角度になるようにする。A method for preparing starch fibers for examining the presence or absence of spinnability is as follows. First, a 10% by weight starch suspension in water is prepared, and this is heated and swollen at 95 ° C. to form a starch colloidal dispersion. . This dispersion is discharged into the coagulation bath at a constant temperature of 55 ° C. at a discharge pressure of 3 Kg / cm 2 from a nozzle having a diameter of 0.4 mm installed in the coagulation bath. A 40% by weight aqueous solution of ammonium sulfate is used as the coagulation liquid in the coagulation bath, and the coagulation bath is agitated so that the discharge direction of the starch dispersion liquid and the flow direction of the coagulation liquid form an angle of about 45 °.
【００１２】デンプン繊維の平均繊維長分布の測定は以
下の方法により行った。上記のようにして調製したデン
プン繊維を凝固浴から取り出してプレパラート上に広
げ、乾燥固定した後、投影機で拡大してマップメーター
を用いて各繊維の長さを測定する。プレパラート１枚当
たり２００本程度のデンプン繊維が固定され、１回の試
験で１０枚のプレパラートを調製し、１種類のデンプン
について３回の試験を行った結果から平均繊維長分布を
計算により求める。The average fiber length distribution of starch fiber was measured by the following method. The starch fiber prepared as described above is taken out from the coagulation bath, spread on a preparation, dried and fixed, and then expanded by a projector and the length of each fiber is measured using a map meter. About 200 starch fibers are fixed per one preparation, 10 preparations are prepared in one test, and the average fiber length distribution is calculated from the results of three tests of one type of starch.
【００１３】上記の方法によりデンプンからデンプン繊
維を実際に調製してみて、曳糸性のあるデンプン種と曳
糸性のないデンプン種とを区分することができる。本発
明者が行った結果から判明したデンプン種を例示すると
次のようになる。[0013] By actually preparing starch fibers from starch by the above-mentioned method, it is possible to distinguish between starch species having spinnability and starch species having no spinnability. Examples of starch species found from the results obtained by the present inventor are as follows.
【００１４】曳糸性のあるデンプン種：ジャガイモ、キ
ャッサバ（タピオカ）、サトイモ、サツマイモ、ナガイ
モ、ダイジョ、ヤウテア、ハリイモ、ヤマノイモ、ギネ
アヤム、インドクワズイモ、キルトスベルマ等。Spinnable starch species: potato, cassava (tapioca), taro, sweet potato, yam, daijo, yautea, taro, yam, ginea yam, Indian mulberry, quilt verma and the like.
【００１５】曳糸性のないデンプン種：トウモロコシ、
コムギ、イネ（コメ）、オオムギ、ライムギ、エンバ
ク、モロコシ、アワ、ヒエ、キビ等。Non-spinnable starch species: corn,
Wheat, rice (rice), barley, rye, oats, sorghum, millet, millet, millet, etc.
【００１６】一般的には、植物の茎や根から得られるデ
ンプンは曳糸性のあるもの、穀物から得られるデンプン
は曳糸性のないものという傾向がみられるが、実際には
デンプン繊維を調製して判断する必要があろう。また上
記で例示したデンプンはいずれも天然デンプンである
が、この発明において使用できるデンプンは天然のもに
限らず、加工デンプン等の変性デンプンであっても上記
のような曳糸性の有無により区分できるものであれば使
用することができる。[0016] Generally, starch obtained from plant stems and roots tends to be spinnable, and starch obtained from grains tends to be non-spinnable. It will need to be prepared and judged. In addition, although the starches exemplified above are all natural starches, the starches that can be used in the present invention are not limited to natural ones, and modified starches such as modified starches are classified according to the presence or absence of spinnability as described above. Anything that can be used can be used.
【００１７】この発明を実施するに際しては、先ず、曳
糸性のあるデンプンと曳糸性のないデンプンとを任意の
比率で混合したデンプン粒子を水に懸濁させて水懸濁液
を調製し、加熱・膨潤させてデンプンのコロイド分散液
とする。デンプン水懸濁液のデンプン濃度が低いと紡糸
時に凝集させる際の凝集力が低下し、デンプン濃度が高
いと膨潤後のデンプンコロイド分散液の流動性がなくな
り紡糸できなくなる。デンプン濃度はデンプンの種類等
により異なるため一概には決められないが、一般的には
５〜２０重量％が好ましい。加熱の温度は、デンプンを
十分に膨潤させて糊化させ得る温度であればよく、一般
的には１００℃以下の温度でよい。In carrying out the present invention, first, starch particles obtained by mixing a spinnable starch and a non-spinnable starch in an arbitrary ratio are suspended in water to prepare an aqueous suspension. , And swell by heating to make a colloidal dispersion of starch. When the starch concentration of the starch aqueous suspension is low, the cohesive force at the time of aggregating at the time of spinning is lowered, and when the starch concentration is high, the fluidity of the starch colloidal dispersion after swelling is lost and spinning is not possible. The starch concentration cannot be determined unconditionally because it varies depending on the type of starch and the like, but it is generally preferably 5 to 20% by weight. The heating temperature may be a temperature at which the starch can be sufficiently swelled to be gelatinized, and generally 100 ° C. or lower.
【００１８】膨潤してコロイド状態を呈するデンプンコ
ロイド分散液は冷却し所定の温度に維持して紡糸する
が、紡糸時のデンプンコロイド分散液の温度は５０〜６
０℃に維持することが好ましい。分散液の温度が変化す
ると粘性が変化するため安定したデンプン繊維が得られ
ず、また著しく温度が低下するとデンプンの老化を引き
起こすことが知られている。The starch colloidal dispersion which swells and exhibits a colloidal state is cooled and spun at a predetermined temperature, and the temperature of the starch colloidal dispersion during spinning is 50 to 6
It is preferable to maintain at 0 ° C. It is known that when the temperature of the dispersion changes, the viscosity changes, so that stable starch fibers cannot be obtained, and when the temperature significantly lowers, starch aging is caused.
【００１９】次に、所定の温度に維持したデンプンコロ
イド分散液を、密閉式容器に入れて一定圧力をかけ、任
意の数、口径および形状をもったノズル口から凝固浴中
に吐出させる、いわゆる湿式紡糸法によりデンプン繊維
に紡糸することができる。かような湿式紡糸法はビスコ
ース繊維等の紡糸法として従来から慣用されている方法
であり、従って既存の紡糸装置を利用することができ
る。デンプン繊維の直径（太さ）は、ノズルの口径を変
化させることにより調節することができる。Next, the starch colloidal dispersion liquid maintained at a predetermined temperature is placed in a closed container, a constant pressure is applied thereto, and the starch colloidal liquid is discharged from a nozzle port having an arbitrary number, diameter and shape into a coagulation bath. Starch fibers can be spun by the wet spinning method. Such a wet spinning method is a method conventionally used as a spinning method for viscose fibers and the like, and therefore an existing spinning apparatus can be used. The diameter (thickness) of the starch fiber can be adjusted by changing the diameter of the nozzle.
【００２０】凝固浴中の凝固液としては硫酸アンモニウ
ム、硫酸ナトリウム、硫酸マグネシウム、リン酸アンモ
ニウム、炭酸ナトリウム、塩化アンモニウム等の水中で
電解質を生じる塩の水溶液が使用でき、硫酸アンモニウ
ムが特に好ましい。凝固液の濃度が低いと凝集効果が十
分得られず、一般的には約３０〜４０重量％濃度の塩水
溶液が好ましい。As the coagulating liquid in the coagulating bath, an aqueous solution of a salt such as ammonium sulfate, sodium sulfate, magnesium sulfate, ammonium phosphate, sodium carbonate or ammonium chloride which produces an electrolyte in water can be used, and ammonium sulfate is particularly preferable. If the concentration of the coagulating liquid is low, the aggregating effect cannot be sufficiently obtained. Generally, a salt aqueous solution having a concentration of about 30 to 40% by weight is preferable.
【００２１】凝固浴中の凝固液には常時撹拌を施して凝
固液に流れを生じさせておく。凝固液の流れの方向と速
度は、得られるデンプン繊維の繊維長や強度に影響を及
ぼす。すなわち、凝固液中に吐出されたデンプン分散液
が安定した糸状の流れとなるようにするには、デンプン
分散液の吐出方向と凝固液の流れの方向とを一致させる
ことが望ましいが、装置の設計上から一致させることが
できない場合には、吐出方向と凝固液の流れ方向とが９
０°以下の角度となるようにすればデンプン分散液に糸
状の流れを形成させることができる。また、凝固液の流
速をデンプン分散液の吐出速度より速くしてデンプンの
糸状物を延伸させることにより、デンプン繊維の水に対
する不溶化およびデンプン繊維の強度を向上させること
ができる。しかしながら凝固液の流速を過度に速くする
と、デンプンの糸状物が凝固浴中でちぎれてしまい、所
望の繊維長が得られない場合もある。上記の理由から、
凝固液の流れの方向や流速は、所望のデンプン繊維が得
られるような条件を予備実験により定めておく必要があ
る。The coagulation liquid in the coagulation bath is constantly agitated to cause a flow in the coagulation liquid. The flow direction and speed of the coagulating liquid affect the fiber length and strength of the obtained starch fiber. That is, in order for the starch dispersion liquid discharged into the coagulation liquid to have a stable thread-like flow, it is desirable that the discharge direction of the starch dispersion liquid and the flow direction of the coagulation liquid are the same. When it is not possible to match them by design, the discharge direction and the flow direction of the coagulating liquid are 9
If the angle is 0 ° or less, a filamentous flow can be formed in the starch dispersion liquid. Further, by making the flow rate of the coagulating liquid faster than the discharge speed of the starch dispersion liquid and stretching the starch filaments, it is possible to improve the insolubilization of starch fibers in water and the strength of starch fibers. However, if the flow rate of the coagulation liquid is too high, the starch filaments may be torn in the coagulation bath, and the desired fiber length may not be obtained. For the above reasons
Regarding the flow direction and flow velocity of the coagulating liquid, it is necessary to determine the conditions for obtaining the desired starch fiber by preliminary experiments.
【００２２】[0022]
【実施例】以下に実施例を挙げてこの発明をさらに説明
する。馬鈴薯デンプンとトウモロコシデンプンの混合比
率を種々に変えたデンプン混合物の１０重量％水懸濁液
を調製し、これを９５℃に加熱・膨潤させてデンプンの
コロイド分散液とした。硫酸アンモニウムの４０重量％
水溶液の凝固液からなる凝固浴中に口径０．４ｍｍの丸
型ノズルを設置し、上記のデンプンコロイド分散液を５
５℃の一定温度として吐出圧力３Ｋｇ／ｃｍ2 でノズル
から凝固浴中に吐出させ、デンプン繊維を製造した。吐
出に際しては、凝固浴を撹拌してデンプン分散液の吐出
方向と凝固液の流れ方向が約４５°の角度になるように
した。The present invention will be further described with reference to the following examples. A 10% by weight aqueous suspension of a starch mixture in which the mixing ratio of potato starch and corn starch was variously prepared was prepared, and this was heated and swollen at 95 ° C. to obtain a starch colloidal dispersion. 40% by weight of ammonium sulfate
A round nozzle with a diameter of 0.4 mm was installed in a coagulation bath consisting of an aqueous solution coagulation liquid, and the above starch colloid dispersion liquid
A starch fiber was produced by discharging the mixture from a nozzle into a coagulation bath at a constant temperature of 5 ° C. and a discharge pressure of 3 Kg / cm 2 . At the time of discharging, the coagulation bath was agitated so that the discharging direction of the starch dispersion liquid and the flowing direction of the coagulating liquid were at an angle of about 45 °.
【００２３】馬鈴薯デンプン（ポテト）とトウモロコシ
デンプン（コーン）との混合比率と得られたデンプン繊
維の平均繊維長分布との関係を表１および図１に示す。
また、各実験で得られたデンプン繊維の顕微鏡写真も併
せて示す。The relation between the mixing ratio of potato starch (potato) and corn starch (corn) and the average fiber length distribution of the obtained starch fibers is shown in Table 1 and FIG.
In addition, micrographs of starch fibers obtained in each experiment are also shown.
【００２４】[0024]
【表１】 デンプン混合比率（重量％） 平均繊維長分布 顕微鏡写真 ［ポテト／コーン］ （ｍｍ） （倍率２６倍） ０／１００ ０．９±０．１８ 図２ ３０／７０ ３．３±０．８０ 図３ ５０／５０ ４．９±０．５７ 図４ ７０／３０ ９．７±０．５４ 図５ １００／０ １８．２±２．２ 図６ [Table 1] Starch mixing ratio (% by weight) Average fiber length distribution Micrograph [potato / corn] (mm) (magnification 26 times) 0/100 0.9 ± 0.18 Figure 2 30/70 3.3 ± 0 .80 FIG. 3 50/50 4.9 ± 0.57 FIG. 4 70/30 9.7 ± 0.54 FIG. 5 100/0 18.2 ± 2.2
【００２５】[0025]
【発明の効果】以上の説明からわかるようにこの発明に
よれば、曳糸性のあるデンプンと曳糸性のないデンプン
との混合比率を変化させた原料デンプンを使用すること
によって、任意の平均繊維長分布をもつデンプン繊維を
容易に製造することができる。かような繊維長の制御さ
れたデンプン繊維を用途に応じて使い分けることによっ
て、繊維長の制御されていない従来のデンプン繊維を使
用した場合には得られなかったような効果の発現が期待
でき、デンプン繊維の用途拡大を図ることができる。As can be seen from the above description, according to the present invention, by using the raw material starch in which the mixing ratio of the spinnable starch and the non-spinnable starch is changed, an arbitrary average can be obtained. Starch fibers with a fiber length distribution can be easily produced. By properly using such a starch fiber having a controlled fiber length depending on the application, it is expected that an effect which cannot be obtained when a conventional starch fiber having a non-controlled fiber length is used is obtained. The application of starch fiber can be expanded.
【図１】原料デンプンにおける馬鈴薯デンプン（ポテ
ト）とトウモロコシデンプン（コーン）との混合比率と
得られたデンプン繊維の平均繊維長分布との関係を示す
グラフ。FIG. 1 is a graph showing the relationship between the mixing ratio of potato starch (potato) and corn starch (corn) in the raw starch and the average fiber length distribution of the obtained starch fibers.
【図２】ポテト／コーンの混合比率が０／１００（コー
ンのみ）の原料デンプンから得られたデンプン繊維の顕
微鏡写真。FIG. 2 is a photomicrograph of starch fibers obtained from a raw starch having a potato / corn mixing ratio of 0/100 (corn only).
【図３】ポテト／コーンの混合比率が３０／７０の原料
デンプンから得られたデンプン繊維の顕微鏡写真。FIG. 3 is a micrograph of starch fibers obtained from a raw starch having a potato / corn mixing ratio of 30/70.
【図４】ポテト／コーンの混合比率が５０／５０の原料
デンプンから得られたデンプン繊維の顕微鏡写真。FIG. 4 is a micrograph of starch fibers obtained from a raw starch having a potato / corn mixing ratio of 50/50.
【図５】ポテト／コーンの混合比率が７０／３０の原料
デンプンから得られたデンプン繊維の顕微鏡写真。FIG. 5 is a photomicrograph of starch fibers obtained from a raw starch having a potato / corn mixing ratio of 70/30.
【図６】ポテト／コーンの混合比率が１００／０（ポテ
トのみ）の原料デンプンから得られたデンプン繊維の顕
微鏡写真。FIG. 6 is a photomicrograph of starch fibers obtained from a raw starch having a potato / corn mixing ratio of 100/0 (potato only).
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年８月２日[Submission date] August 2, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Name of item to be corrected] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００３】かようなデンプン繊維の製造方法として
は、デンプンの水懸濁液を加熱あるいはアルカリ処理し
てデンプンのコロイド分散液とし、これを硫酸アンモニ
ウム等の水溶液からなる凝固浴中に糸状の流れにして押
出して凝固させる方法や、デンプン水懸濁液をジェット
・クッキング法により煮沸溶解したデンプンコロイド分
散液を凝固浴中で凝固させる方法等が種々提案されてい
る（例えば米国特許第４１３９６９９号、イタリア特許
出願９１Ａ０００６１０号、特公昭６０−３５４８０号
等）。As a method for producing such starch fibers, an aqueous suspension of starch is heated or treated with an alkali to form a colloidal dispersion of starch, which is made into a filamentous flow in a coagulation bath consisting of an aqueous solution of ammonium sulfate or the like. Various methods have been proposed (eg, US Pat. No. 4,139,699, Italy) in which a starch colloidal dispersion obtained by boiling and dissolving a starch aqueous suspension by boiling is coagulated in a coagulation bath. Patent application 91A000610, Sho 60-354 80 No., etc.).
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００４】[0004]
【発明が解決しようとする課題】上述した従来の製造方
法で得られるデンプン繊維の繊維長としては、例えばイ
タリア特許出願９１Ａ０００６１０号では１ｍｍ未満、
特公昭６０−３５４８０号では０．１〜３．０ｍｍと記
載されている。しかしながら、デンプン繊維を例えば製
紙分野に利用する場合には、繊維長が極端に短ければ抄
紙時にワイヤーから抜けてしまい本来の目的が達成でき
ず、一方、繊維長が長すぎても繊維同志が結束したまま
抄き込まれてしまうという不都合が生じる。The fiber length of the starch fiber obtained by the above-mentioned conventional production method is, for example, less than 1 mm in Italian Patent Application 91A000610,
In JP 60-354 80 No. is described as 0.1 to 3.0 mm. However, when starch fibers are used in the field of papermaking, for example, if the fiber length is extremely short, the fibers will fall out of the wire during papermaking and the original purpose cannot be achieved.On the other hand, if the fiber length is too long, the fibers will bind together. There is the inconvenience that the paper will be cut as it is.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】この発明において、曳糸性のないデンプン
とは、下記の方法によりデンプン繊維を調製した場合
に、平均繊維長分布が約１ｍｍ以下のデンプン繊維が得
られるものをいい、曳糸性のあるデンプンとは、平均繊
維長分布が約１５ｍｍ以上のデンプン繊維が得られるも
のをいう。[0010] In this invention, the spinnability no starch, when the preparation of the starch fibers by the following method, referred to herein is about 1mm or less of the starch fiber average fiber length distribution can be obtained, the spinnability A certain starch refers to a starch fiber having an average fiber length distribution of about 15 mm or more.
Claims (2)
とによってデンプン繊維を製造する方法において、原料
デンプンとして曳糸性のあるデンプンと曳糸性のないデ
ンプンとの混合物を使用し、両者の混合比率を変えるこ
とによりデンプン繊維の平均繊維長を制御することを特
徴とするデンプン繊維の製造方法。1. A method for producing starch fibers by spinning a colloidal dispersion of starch, wherein a mixture of spinnable starch and non-spinnable starch is used as a raw material starch, and a mixing ratio of the two is used. A method for producing starch fibers, characterized in that the average fiber length of the starch fibers is controlled by changing
プンを、曳糸性のないデンプンとしてトウモロコシデン
プンを使用する請求項１記載のデンプン繊維の製造方
法。2. The method for producing a starch fiber according to claim 1, wherein potato starch is used as the spinnable starch and corn starch is used as the non-spinnable starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15467294A JP3309886B2 (en) | 1994-07-06 | 1994-07-06 | Method for producing starch fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15467294A JP3309886B2 (en) | 1994-07-06 | 1994-07-06 | Method for producing starch fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0827627A true JPH0827627A (en) | 1996-01-30 |
| JP3309886B2 JP3309886B2 (en) | 2002-07-29 |
Family
ID=15589385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15467294A Expired - Fee Related JP3309886B2 (en) | 1994-07-06 | 1994-07-06 | Method for producing starch fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3309886B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6623854B2 (en) | 2001-05-10 | 2003-09-23 | The Procter & Gamble Company | High elongation multicomponent fibers comprising starch and polymers |
| US6723160B2 (en) | 2002-02-01 | 2004-04-20 | The Procter & Gamble Company | Non-thermoplastic starch fibers and starch composition for making same |
| US6743506B2 (en) | 2001-05-10 | 2004-06-01 | The Procter & Gamble Company | High elongation splittable multicomponent fibers comprising starch and polymers |
| US6746766B2 (en) | 2001-05-10 | 2004-06-08 | The Procter & Gamble Company | Multicomponent fibers comprising starch and polymers |
| US6783854B2 (en) | 2001-05-10 | 2004-08-31 | The Procter & Gamble Company | Bicomponent fibers comprising a thermoplastic polymer surrounding a starch rich core |
| US6811740B2 (en) | 2000-11-27 | 2004-11-02 | The Procter & Gamble Company | Process for making non-thermoplastic starch fibers |
| US6830810B2 (en) | 2002-11-14 | 2004-12-14 | The Procter & Gamble Company | Compositions and processes for reducing water solubility of a starch component in a multicomponent fiber |
| US6890872B2 (en) | 2001-05-10 | 2005-05-10 | The Procter & Gamble Company | Fibers comprising starch and biodegradable polymers |
| US7384588B2 (en) | 2000-11-27 | 2008-06-10 | The Procter + Gamble Company | Process for making a flexible structure comprising starch filaments |
| US7524379B2 (en) | 1999-03-08 | 2009-04-28 | The Procter + Gamble Company | Melt processable starch compositions |
| US7947766B2 (en) | 2003-06-06 | 2011-05-24 | The Procter & Gamble Company | Crosslinking systems for hydroxyl polymers |
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|---|---|---|---|---|
| US7524379B2 (en) | 1999-03-08 | 2009-04-28 | The Procter + Gamble Company | Melt processable starch compositions |
| US6811740B2 (en) | 2000-11-27 | 2004-11-02 | The Procter & Gamble Company | Process for making non-thermoplastic starch fibers |
| US7384588B2 (en) | 2000-11-27 | 2008-06-10 | The Procter + Gamble Company | Process for making a flexible structure comprising starch filaments |
| US7851391B2 (en) | 2001-05-10 | 2010-12-14 | The Procter & Gamble Company | Multicomponent fibers comprising starch and polymers |
| US6746766B2 (en) | 2001-05-10 | 2004-06-08 | The Procter & Gamble Company | Multicomponent fibers comprising starch and polymers |
| US6783854B2 (en) | 2001-05-10 | 2004-08-31 | The Procter & Gamble Company | Bicomponent fibers comprising a thermoplastic polymer surrounding a starch rich core |
| US6623854B2 (en) | 2001-05-10 | 2003-09-23 | The Procter & Gamble Company | High elongation multicomponent fibers comprising starch and polymers |
| US6890872B2 (en) | 2001-05-10 | 2005-05-10 | The Procter & Gamble Company | Fibers comprising starch and biodegradable polymers |
| US6946506B2 (en) | 2001-05-10 | 2005-09-20 | The Procter & Gamble Company | Fibers comprising starch and biodegradable polymers |
| US6743506B2 (en) | 2001-05-10 | 2004-06-01 | The Procter & Gamble Company | High elongation splittable multicomponent fibers comprising starch and polymers |
| US9925706B2 (en) | 2001-05-10 | 2018-03-27 | The Procter & Gamble Company | Process of producing a melt-spinnable fiber using thermoplastic polymer and destructured starch |
| US6723160B2 (en) | 2002-02-01 | 2004-04-20 | The Procter & Gamble Company | Non-thermoplastic starch fibers and starch composition for making same |
| US6830810B2 (en) | 2002-11-14 | 2004-12-14 | The Procter & Gamble Company | Compositions and processes for reducing water solubility of a starch component in a multicomponent fiber |
| US7947766B2 (en) | 2003-06-06 | 2011-05-24 | The Procter & Gamble Company | Crosslinking systems for hydroxyl polymers |
| US8088843B2 (en) | 2003-06-06 | 2012-01-03 | The Procter & Gamble Company | Crosslinking systems for hydroxyl polymers |
| US8129449B2 (en) | 2003-06-06 | 2012-03-06 | The Procter & Gabmle Company | Crosslinking systems for hydroxyl polymers |
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| CN116898793B (en) * | 2023-05-24 | 2024-05-24 | 广西师范大学 | A lysozyme hydrogel for diabetic foot ulcer and preparation method thereof |
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