CN113040579A - Self-healing gel ice cup without melting - Google Patents
Self-healing gel ice cup without melting Download PDFInfo
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- CN113040579A CN113040579A CN202110305919.1A CN202110305919A CN113040579A CN 113040579 A CN113040579 A CN 113040579A CN 202110305919 A CN202110305919 A CN 202110305919A CN 113040579 A CN113040579 A CN 113040579A
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- 230000008018 melting Effects 0.000 title claims abstract description 6
- 238000002844 melting Methods 0.000 title claims abstract description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 70
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 70
- 239000000499 gel Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000000017 hydrogel Substances 0.000 claims abstract description 30
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 86
- 229920002401 polyacrylamide Polymers 0.000 claims description 28
- 239000007864 aqueous solution Substances 0.000 claims description 22
- 230000008014 freezing Effects 0.000 claims description 17
- 238000007710 freezing Methods 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 16
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 7
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 150000003254 radicals Chemical class 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims description 2
- UFULAYFCSOUIOV-UHFFFAOYSA-N cysteamine Chemical compound NCCS UFULAYFCSOUIOV-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229960003151 mercaptamine Drugs 0.000 claims description 2
- 238000010257 thawing Methods 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims 2
- 239000000576 food coloring agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 4
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 108010053210 Phycocyanin Proteins 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- DJVKJGIZQFBFGS-UHFFFAOYSA-N n-[2-[2-(prop-2-enoylamino)ethyldisulfanyl]ethyl]prop-2-enamide Chemical compound C=CC(=O)NCCSSCCNC(=O)C=C DJVKJGIZQFBFGS-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/22—Drinking vessels or saucers used for table service
- A47G19/2205—Drinking glasses or vessels
- A47G19/2227—Drinking glasses or vessels with means for amusing or giving information to the user
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
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Abstract
本发明公开了一种不融化的自愈合凝胶冰杯，采用自愈合水凝胶材料，经模具成型制得，自愈合水凝胶材料为由聚乙烯醇(PVA)、或聚丙烯酰胺(PAAm)‑聚乙烯醇(PVA)双网络凝胶材料所制得的自愈合水凝胶材料中的一种。该凝胶冰杯不融化，使冰杯从一次性产品变成了可重复利用产品；具有超韧性，不易摔碎，延长了使用寿命；具备裂痕自修复的功能，节约了原材料。
The invention discloses a non-melting self-healing gel ice cup, which is prepared by using a self-healing hydrogel material through mold molding. The self-healing hydrogel material is made of polyvinyl alcohol (PVA), One of the self-healing hydrogel materials prepared from acrylamide (PAAm)-polyvinyl alcohol (PVA) double network gel materials. The gel ice cup does not melt, making the ice cup from a disposable product to a reusable product; it has super toughness, is not easy to break, and prolongs the service life; it has the function of self-repairing cracks, saving raw materials.
Description
Technical Field
The invention relates to an ice cup, in particular to an infusible self-healing gel ice cup.
Background
Along with the improvement of the living quality of people, the demand on catering articles is also diversified day by day, and ice tableware is required to have the visual sense touch feeling of ice and snow and also has good use experience. There are two main types of ice cups on the market at present: the first is prepared by injecting purified water into a mold, freezing and demolding. The second type of cup body is composed of two layers of plastic, metal or ceramic, wherein the interlayer is filled with liquid, and after the cup body is placed into a refrigerator for freezing, the interlayer liquid is solidified and is used for cooling the contents in the cup. The first ice cup is made of real ice, is easy to melt and lose at room temperature, and the real ice is very high in brittleness and poor in toughness, so that the ice cup is easy to break; meanwhile, the true ice cannot be repaired after being broken, and the ice cup loses the function of serving as a container after being melted, so that the service life is extremely short, and the repeated utilization cannot be realized. The second ice cup has no adjustable transmittance and can not be self-healed due to the limitation of the cup body material.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an infusible self-healing gel ice cup.
The self-healing gel ice cup without melting is characterized in that the ice cup is made of a self-healing hydrogel material through mold forming.
Further, the self-healing hydrogel material is prepared from a polyvinyl alcohol (PVA) or polyacrylamide (PAAm) -polyvinyl alcohol (PVA) double-network gel material.
Further, the self-healing hydrogel material is polyvinyl alcohol (PVA) physical cross-linked hydrogel, and the preparation process of the self-healing gel ice cup comprises the following steps:
dissolving 1-10g of PVA powder in deionized water to prepare a PVA aqueous solution with the mass fraction of 1-10%, injecting the PVA aqueous solution into a mold, freezing at-20 to-10 ℃ for 12-16 h, standing at room temperature for 12-16 h, performing freeze-thaw cycle for 3 times to obtain a PVA physically-crosslinked hydrogel ice cup, and demolding after freezing for 12h in a refrigerator.
Further, the self-healing hydrogel material is polyacrylamide (PAAm) -polyvinyl alcohol (PVA) double-network hydrogel, the first network is a polyacrylamide (PAAm) network containing dynamic disulfide bonds, the second network is a hydrogen bond cross-linked polyvinyl alcohol (PVA) network, and the preparation process of the self-healing gel ice cup comprises the following steps:
preparation of S1 self-healing gel precursor solution:
1) dissolving 1-10g of PVA in 100ml of deionized water to prepare a PVA aqueous solution with the mass fraction of 1% -10%, heating the PVA aqueous solution to 98 ℃, stirring for 1-6 h until the PVA aqueous solution is completely dissolved, and finally obtaining a uniform and transparent solution;
2) after cooling, 8-40 g of acrylamide (AAm) monomer is added, the final mass fraction is ensured to be 8-40%, 0.2mol/L of 0.5-2 ml of a free radical thermal initiator Ammonium Persulfate (APS) aqueous solution, 5-10 ml of an N, N' -bis (acryloyl) cysteamine cross-linking agent aqueous solution (mass fraction is 0.1-0.4%) containing dynamic disulfide bonds and 5-20 mul of catalyst Tetramethylethylenediamine (TEMED) are added;
s2, pouring the self-healing gel precursor solution into an ice cup mold, putting the ice cup mold into a vacuum oven with the temperature of 30-65 ℃, curing for 3-12 h, and demolding to obtain a first network gel material, namely polyacrylamide (PAAm) containing dynamic disulfide bonds;
s3, placing the polyacrylamide (PAAm) containing the dynamic disulfide bonds in a refrigerator, freezing for 6-12 h at-10 to-20 ℃, and thawing for 6-12 h at room temperature for 2-4 times in a freeze-thaw cycle to obtain hydrogen bond crosslinked polyvinyl alcohol (PVA) as a second network gel material;
s4, soaking the hydrogen bond crosslinked polyvinyl alcohol (PVA) in deionized water, replacing the deionized water once every 6h, repeating for 3-5 times, and removing unreacted monomer acrylamide (AAm), a crosslinking agent and a free radical thermal initiator;
s5, freezing the gel material obtained in the step S4 at the temperature of-10 to-20 ℃ for 24 hours to obtain the self-healing gel ice cup.
Further, edible pigment or edible fluorescent powder is added into the self-healing gel ice cup.
Furthermore, a solidification temperature regulator and a transmittance regulator are added into the self-healing gel ice cup.
Further, the solidification temperature and transmittance regulator is one or more of glycerol, sodium chloride or calcium chloride.
Compared with the prior art, the invention has the following beneficial effects:
1. the gel ice cup adopts hydrogel prepolymer solution as a matrix material, a polymer network capable of locking water molecules is obtained, the ice cup keeps a solid shape, the gel ice cup is not melted, the disposable product of the ice cup is changed into a recyclable product, and the production cost is greatly reduced.
2. By adjusting the proportion of the hydrogel prepolymer solution, the crystal in the gel ice cup is in a solid-liquid mixed state, the gel ice cup has super toughness and is not easy to break, and the service life of the ice cup is prolonged.
3. The self-healing hydrogel prepolymer solution is used as a base material, so that the ice cup has a crack self-healing function, and raw materials of the ice cup are greatly saved.
4. The freezing temperature regulator or the transmittance regulator is added into the prepolymer solution according to the requirement, so that the ice cup can show different transparencies at different temperatures, and the interestingness and the ornamental value are increased.
Drawings
Fig. 1 and 2 show two different shapes of self-healing ice cups without melting.
Fig. 3 and 4 are self-healing gel ice cups of two different light transmittances.
FIG. 5 is a schematic illustration of the super-toughness of self-healing hydrogel materials.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below. While exemplary embodiments, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
An infusible self-healing gel ice cup is prepared by molding self-healing hydrogel material with a mold, as shown in fig. 1 and fig. 2. The self-healing hydrogel material is one of self-healing hydrogel materials prepared from polyvinyl alcohol (PVA) or polyacrylamide (PAAm) -polyvinyl alcohol (PVA) double-network gel materials.
In order to increase the diversity of the gel ice cups, edible pigments (such as phycocyanin, beet red and the like) and edible fluorescent powder (such as Turkish blue fluorescent powder and the like) can be optionally added. In order to increase the interest, a freezing temperature and transmittance regulator (such as glycerol, sodium chloride, calcium chloride, etc.) can be properly added into the prepolymer solution according to the needs, so that the ice cup can show different transparencies at different temperatures, as shown in fig. 3 and 4.
Example 1
An infusible self-healing gel ice cup is prepared by utilizing a self-healing hydrogel material and carrying out one-step molding by a mold, wherein the self-healing hydrogel material is prepared from polyvinyl alcohol (PVA), and the preparation process comprises the following steps:
s1, selecting a proper casting mold according to the required shape;
s2, weighing 5g of PVA powder, dissolving the PVA powder in 100ml of deionized water to prepare a PVA aqueous solution with the mass fraction of 5%, and injecting the PVA aqueous solution into a mould;
s3 freezing at-20 ℃ for 12h, standing at room temperature for 12h, and performing freeze-thaw cycling for 3 times to obtain a PVA physical crosslinked hydrogel ice cup;
s4 the product is frozen for 12h and then demoulded for use.
Example 2
An infusible self-healing gel ice cup is prepared by utilizing a self-healing hydrogel material and carrying out one-step molding through a mold, wherein the self-healing hydrogel material adopts polyacrylamide (PAAm) -polyvinyl alcohol (PVA) double-network gel and has self-healing performance, a first network is a polyacrylamide (PAAm) network containing dynamic disulfide bonds, a second network is a polyvinyl alcohol (PVA) network crosslinked by hydrogen bonds, and the dynamic disulfide bonds and the hydrogen bonds provide the self-healing performance, and the preparation process comprises the following steps:
s1, selecting a proper casting mold according to the required shape;
preparation of S2 self-healing gel precursor solution:
1) weighing 5g of PVA, dissolving the 5g of PVA in 100ml of deionized water to obtain an aqueous solution with the mass fraction of the PVA of 5%, heating the aqueous solution of the PVA to 98 ℃, stirring the aqueous solution for 6 hours until the aqueous solution is completely dissolved to finally form a uniform and transparent solution, and cooling the solution for later use;
2) 20g of acrylamide (AAm) monomer is added into the PVA aqueous solution, the final mass fraction is 20%, 2ml of 0.2mol/L free radical thermal initiator Ammonium Persulfate (APS) aqueous solution, 10ml of N, N' -bis (acryloyl) cystamine crosslinking agent (mass fraction is 2%) containing dynamic disulfide bonds, and 20 mu L of catalyst Tetramethylethylenediamine (TEMED) is added;
s3, pouring the obtained precursor solution into an ice cup mold, putting the ice cup mold into a vacuum oven with the temperature of 65 ℃, curing for 3 hours, and taking the ice cup mold out of the mold to obtain a first network gel material of polyacrylamide (PAAm) containing dynamic disulfide bonds;
s4, placing the obtained first network gel material in a refrigerator, freezing for 6h at-20 ℃, then unfreezing for 6h at room temperature, and carrying out freeze-thaw cycling for 4 times to obtain a hydrogen bond cross-linked polyvinyl alcohol (PVA) second network gel material;
s5, soaking the obtained second network gel material in deionized water, replacing the deionized water once every 6h, repeating the steps for 5 times, and removing unreacted monomers, cross-linking agents and free radical thermal initiators;
s6 freezing at-20 deg.C for about 24h to obtain self-healing gel ice cup.
A compression test comparison was made for the self-healing gel ice cup material of example 2 and the material used for the real ice cups:
1) weighing 650ml of distilled water, freezing for 24h in a refrigerator at the temperature of-20 ℃, and making into a cylinder with the diameter of 10cm and the height of 8cm to obtain a compressed sample used by a real ice cup;
2) preparing a gel ice cup compression sample piece with the diameter of 10cm and the height of 8cm by using the self-healing gel ice cup material in the embodiment 3;
3) respectively compressing a material compression sample piece used by a real ice cup and a material compression sample piece used by a self-healing gel ice cup at a speed of 6mm/min by using a WDW series (desktop) microcomputer control electronic universal testing machine;
4) as shown in fig. 5, the material used for the real ice cup was broken quickly in the compression test, while the self-healing gel ice cup exhibited very strong toughness and could withstand very large pressures and deformations without breaking.
It is to be understood that the foregoing is merely illustrative of some embodiments and that changes, modifications, additions and/or variations may be made without departing from the scope and spirit of the disclosed embodiments, which are intended to be illustrative and not limiting. Furthermore, the described embodiments are directed to embodiments presently contemplated to be the most practical and preferred, it being understood that the embodiments should not be limited to the disclosed embodiments, but on the contrary, are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the embodiments. Moreover, the various embodiments described above can be used in conjunction with other embodiments, e.g., aspects of one embodiment can be combined with aspects of another embodiment to realize yet another embodiment. In addition, each individual feature or element of any given assembly may constitute additional embodiments.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The self-healing gel ice cup without melting is characterized in that the ice cup is made of a self-healing hydrogel material through mold forming.
2. An infusible, self-healing gel ice cup according to claim 1 wherein the self-healing hydrogel material is a self-healing hydrogel material made from a polyvinyl alcohol (PVA) or polyacrylamide (PAAm) -polyvinyl alcohol (PVA) double network gel material.
3. An infusible, self-healing gel ice cup according to claim 1 wherein the self-healing hydrogel material is a polyvinyl alcohol (PVA) physically cross-linked hydrogel, and the process for preparing the self-healing gel ice cup comprises the steps of:
dissolving 1-10g of PVA powder in deionized water to prepare a PVA aqueous solution with the mass fraction of 1-10%, injecting the PVA aqueous solution into a mold, freezing at-20 to-10 ℃ for 12-16 h, standing at room temperature for 12-16 h, performing freeze-thaw cycle for 3 times to obtain a PVA physically-crosslinked hydrogel ice cup, and demolding after freezing for 12h in a refrigerator.
4. An infusible self-healing gel ice cup according to claim 1 wherein the self-healing hydrogel material is a polyacrylamide (PAAm) -polyvinyl alcohol (PVA) double network hydrogel, the first network is a polyacrylamide (PAAm) network containing dynamic disulfide bonds and the second network is a hydrogen bond cross-linked polyvinyl alcohol (PVA) network, the self-healing gel ice cup is prepared by a process comprising the steps of:
preparation of S1 self-healing gel precursor solution:
1) dissolving 1-10g of PVA in 100ml of deionized water to prepare a PVA aqueous solution with the mass fraction of 1-10%, heating the PVA aqueous solution to 98 ℃, and stirring for 1-6 h until the PVA aqueous solution is completely dissolved to finally form a uniform and transparent solution;
2) after cooling, 8-40 g of acrylamide (AAm) monomer is added, the final mass fraction is ensured to be 8-40%, 0.2mol/L of 0.5-2 ml of a free radical thermal initiator Ammonium Persulfate (APS) aqueous solution, 5-10 ml of an N, N' -bis (acryloyl) cysteamine cross-linking agent aqueous solution (mass fraction is 0.1-0.4%) containing dynamic disulfide bonds and 5-20 mul of catalyst Tetramethylethylenediamine (TEMED) are added;
s2, pouring the self-healing gel precursor solution into an ice cup mold, putting the ice cup mold into a vacuum oven with the temperature of 30-65 ℃, curing for 3-12 h, and demolding to obtain a first network gel material, namely polyacrylamide (PAAm) containing dynamic disulfide bonds;
s3, placing the polyacrylamide (PAAm) containing the dynamic disulfide bonds in a refrigerator, freezing for 6-12 h at-10 to-20 ℃, and thawing for 6-12 h at room temperature for 2-4 times in a freeze-thaw cycle to obtain hydrogen bond crosslinked polyvinyl alcohol (PVA) as a second network gel material;
s4, soaking the hydrogen bond crosslinked polyvinyl alcohol (PVA) in deionized water, replacing the deionized water once every 6h, repeating for 3-5 times, and removing unreacted monomer acrylamide (AAm), a crosslinking agent and a free radical thermal initiator;
s5, freezing the gel material obtained in the step S4 in a refrigerator, and freezing for 24 hours at the temperature of minus 10 to minus 20 ℃ to obtain the self-healing gel ice cup.
5. An infusible, self-healing gel ice cup according to any of claims 1 to 4 wherein food coloring or food fluorescent powder is added to the self-healing gel ice cup.
6. An infusible, self-healing gel ice cup according to any of claims 1 to 4 wherein a setting temperature and light transmittance modifier is added to the self-healing gel ice cup.
7. An infusible, self-healing gel ice cup according to claim 6 wherein the setting temperature and light transmittance modifier is one or more of glycerol, sodium chloride or calcium chloride.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114311721A (en) * | 2021-12-27 | 2022-04-12 | 青岛农业大学 | Preparation method of edible and biodegradable tableware |
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| CN114311721A (en) * | 2021-12-27 | 2022-04-12 | 青岛农业大学 | Preparation method of edible and biodegradable tableware |
| CN114311721B (en) * | 2021-12-27 | 2023-09-08 | 青岛农业大学 | Preparation method of edible biodegradable tableware |
| US12226034B2 (en) | 2021-12-27 | 2025-02-18 | Qingdao Agricultural University | Preparation method of edible and biodegradable tableware |
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