CN117586462A - Preparation method of temperature stimulus response type intelligent hydrogel material - Google Patents
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- 239000000463 material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- 102000008186 Collagen Human genes 0.000 claims abstract description 18
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000243 solution Substances 0.000 claims abstract description 15
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- 238000000034 method Methods 0.000 claims abstract 7
- 230000015556 catabolic process Effects 0.000 claims description 11
- 238000006731 degradation reaction Methods 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 5
- 239000003431 cross linking reagent Substances 0.000 claims description 5
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 claims description 5
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 4
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- WDFKEEALECCKTJ-UHFFFAOYSA-N n-propylprop-2-enamide Chemical compound CCCNC(=O)C=C WDFKEEALECCKTJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- OVHHHVAVHBHXAK-UHFFFAOYSA-N n,n-diethylprop-2-enamide Chemical compound CCN(CC)C(=O)C=C OVHHHVAVHBHXAK-UHFFFAOYSA-N 0.000 claims description 3
- SWPMNMYLORDLJE-UHFFFAOYSA-N n-ethylprop-2-enamide Chemical compound CCNC(=O)C=C SWPMNMYLORDLJE-UHFFFAOYSA-N 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 3
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 claims description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 2
- 102000004190 Enzymes Human genes 0.000 claims description 2
- 108090000790 Enzymes Proteins 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 230000008635 plant growth Effects 0.000 abstract description 6
- 238000006116 polymerization reaction Methods 0.000 abstract description 3
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229920001661 Chitosan Polymers 0.000 description 5
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- 238000001704 evaporation Methods 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- 108091005804 Peptidases Proteins 0.000 description 2
- 239000004365 Protease Substances 0.000 description 2
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- DEGZUQBZHACZKW-UHFFFAOYSA-N 2-(methylamino)ethyl 2-methylprop-2-enoate Chemical compound CNCCOC(=O)C(C)=C DEGZUQBZHACZKW-UHFFFAOYSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- AWUCVROLDVIAJX-UHFFFAOYSA-N alpha-glycerophosphate Natural products OCC(O)COP(O)(O)=O AWUCVROLDVIAJX-UHFFFAOYSA-N 0.000 description 1
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- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000004132 cross linking Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- KCRZDTROFIOPBP-UHFFFAOYSA-N phosphono 2,3-dihydroxypropanoate Chemical compound OCC(O)C(=O)OP(O)(O)=O KCRZDTROFIOPBP-UHFFFAOYSA-N 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- AWUCVROLDVIAJX-GSVOUGTGSA-N sn-glycerol 3-phosphate Chemical compound OC[C@@H](O)COP(O)(O)=O AWUCVROLDVIAJX-GSVOUGTGSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229960002901 sodium glycerophosphate Drugs 0.000 description 1
- REULQIKBNNDNDX-UHFFFAOYSA-M sodium;2,3-dihydroxypropyl hydrogen phosphate Chemical compound [Na+].OCC(O)COP(O)([O-])=O REULQIKBNNDNDX-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
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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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a preparation method of a temperature stimulus response type intelligent hydrogel material, which comprises the following steps: s1, uniformly mixing an acrylic acid monomer with a temperature response function and an acrylic acid monomer with strong water absorption capacity to prepare a monomer solution for later use; dissolving an initiator in water for standby; s2, dissolving animal collagen in water, heating to 70-80 ℃, then simultaneously dropwise adding the monomer solution and the initiator solution in the S1, heating to 85 ℃ after the completion of dropwise adding in 2 hours, preserving heat for 0.5 hour, regulating pH to be neutral by using 25% alkaline solution, cooling and discharging, and drying in a spray drying tower to obtain the temperature stimulus response type intelligent hydrogel material. The intelligent hydrogel releases water at high temperature for plant growth; the water-retaining and water-releasing auxiliary agent can absorb the moisture in the air at low temperature and promote the plant growth in the environment with large temperature difference on the plateau; meanwhile, the preparation process is simple, the polymerization is rapid, and the method is suitable for industrial mass production.
Description
Technical Field
The invention relates to the technical field of special materials for agriculture and animal husbandry, in particular to a preparation method of a temperature stimulus response type intelligent hydrogel material.
Background
The smart hydrogel (Intelligent hydrogel) is a polymer material that responds to changes in environmental conditions such as pH, temperature, magnetic field, electricity, light, etc., and has a specific function. The intelligent hydrogel responds to the stimulation of the external environment change, and can absorb or release water by changing the pH value and the temperature of the environment.
The temperature sensitive hydrogel refers to a polymer hydrogel with the volume of the hydrogel changing along with the change of temperature, and macroscopically shows the temperature sensitive property of the hydrogel, namely, the hydrogel is capable of removing water at high temperature and absorbing water at low temperature. The current technology for preparing temperature sensitive hydrogel is complex, such as Chen Huanhuan, and the like, and the chitosan/glycerophosphate system is used for preparing the temperature sensitive hydrogel which can rapidly gel at body temperature through chemical and physical crosslinking. The temperature-sensitive hydrogel is prepared by copolymerizing chitosan and sodium glycerophosphate, and the electrostatic attraction formed by chitosan and phosphoglycerate is destroyed with the rise of temperature, so that a large number of hydrogen bonds are formed among chitosan molecular chains to generate gelation. Ho and the like prepare two types of injectable temperature-sensitive hydrogels by taking chitosan and the like as raw materials, and experiments show that the polymer has temperature sensitivity, but the polymerization process is complex, and industrial production is difficult. Qu Wenjuan the temperature sensitive hydrogel is prepared by polymerizing monomers such as methacrylic acid-2 (methylamino) ethyl ester, N-vinyl pyrrolidone, itaconic acid and the like through a free radical aqueous solution, and the larger the addition amount of the N-vinyl pyrrolidone and the itaconic acid is, the larger the degree of decrease of the swelling rate of the hydrogel is, and the better the effect is, but the cost of the synthetic polymer is increased, so that the practical utilization is not facilitated.
When the existing temperature-sensitive hydrogel is used as a soil water-retaining agent in agriculture and forestry, the water absorption and release capacities of the existing temperature-sensitive hydrogel are poor, the water demand of plant growth cannot be met, for example, the water demand is high when the plant growth is at the fastest time in the daytime, and the hydrogel is easy to cause insufficient water supply to plants due to the strong water-retaining capacity of the existing temperature-sensitive hydrogel; and when the temperature is low at night, a large amount of water contained in the air is easy to condense on the ground, and the hydrogel cannot actively absorb and utilize the water. Therefore, there is an urgent need for a temperature-sensitive hydrogel that has a simple preparation process, can be industrially produced on a large scale, and has strong water absorption and release capabilities.
Disclosure of Invention
The invention aims to solve the problems of poor water absorption and water release capacity and complex preparation process of temperature-sensitive hydrogel in the prior art, and provides a preparation method of a temperature-stimulus-responsive intelligent hydrogel material.
In order to solve the technical problems, the invention adopts the following technical scheme: a preparation method of a temperature stimulus response type intelligent hydrogel material comprises the following steps:
s1, uniformly mixing an acrylic acid monomer with a temperature response function and an acrylic acid monomer with strong water absorption capacity to prepare a monomer solution for later use; dissolving an initiator in water for standby;
s2, dissolving animal collagen in water, heating to 70-80 ℃, then simultaneously dropwise adding the monomer solution and the initiator solution in the S1, heating to 85 ℃ after the completion of dropwise adding in 2 hours, preserving heat for 0.5 hour, regulating pH to be neutral by using 25% alkaline solution, cooling and discharging, and drying in a spray drying tower to obtain the temperature stimulus response type intelligent hydrogel material.
Preferably, the weight portions are as follows: 30-50 parts of animal collagen, 10-30 parts of acrylic acid monomer with temperature response function, 10-30 parts of acrylic acid monomer with strong water absorption capacity, 2-5 parts of cross-linking agent and 2-5 parts of initiator.
Preferably, the animal collagen is obtained by degrading animal skin and waste leftover materials; the degradation is one of high-temperature hydrolysis and enzyme hydrolysis, and the molecular weight of the animal collagen after degradation is 2K-65K.
Preferably, the acrylic monomer with the temperature response function is one or two of N-isopropyl acrylamide, N-N-propyl acrylamide, N-ethyl acrylamide and N, N-diethyl acrylamide.
Preferably, the acrylic monomer with strong water absorption capability is one or two of acrylic acid, hydroxyethyl acrylate and acrylamide.
Further preferably, the crosslinking agent is one of divinylbenzene, trimethylolpropane trimethacrylate, polyethylene glycol dimethacrylate and ethylene glycol dimethacrylate.
Further preferably, the initiator is one of ammonium persulfate, potassium persulfate, sodium peroxide and hydrogen peroxide.
Still more preferably, the alkaline substance is one of sodium hydroxide, sodium carbonate and sodium bicarbonate.
The invention also provides the temperature stimulus response type intelligent hydrogel material prepared by the preparation method.
The invention has the beneficial effects that:
the invention takes animal collagen as a main body, and obtains the collagen-based intelligent hydrogel with temperature stimulus response performance after the pH value is adjusted to be neutral by alkaline substances after the animal collagen-based intelligent hydrogel is polymerized with acrylic acid monomers, cross-linking agents, initiators and the like, wherein the minimum critical transition temperature (LCST) is 15-50 ℃. As the temperature rises, the hydrophobic effect between the inside of the polymer is enhanced, the hydrogen bond is destroyed, the combination of the water molecule and the polymer chain is reduced, and the water is discharged out of the hydrogel; at the same time, the hydrogel undergoes a significant volume shrinkage at LCST, the hydrophobicity is enhanced, and water is also excluded from the hydrogel. Conversely, hydrogels exhibit water-absorbing properties as the temperature decreases. Therefore, the collagen-based intelligent hydrogel with temperature stimulus response performance in the invention releases water for plant growth at high temperature; the water-retaining and water-releasing auxiliary agent can absorb the moisture in the air at low temperature and promote the plant growth in the environment with large temperature difference on the plateau.
The preparation process is simple, the polymerization is rapid, the operation is easy, the product quality is stable, and the preparation process is suitable for industrial mass production.
Drawings
FIG. 1 is a graph showing the prolonged water absorption effect of a collagen-based smart hydrogel with temperature stimulus response property at 30 ℃ over time;
FIG. 2 shows the change of water absorption rate with temperature for 5 hours of collagen-based intelligent hydrogel with temperature stimulus response performance in the range of 10-50 ℃.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Example 1
Dissolving 50 parts of animal collagen base obtained by hydrolyzing pigskin with high temperature in water, and heating to 70-80 ℃. Uniformly mixing 10 parts of N-isopropyl acrylamide, 10 parts of N-N-propyl acrylamide, 25 parts of acrylamide, 5 parts of acrylic acid and 2 parts of ethylene glycol dimethacrylate for later use. 2 parts of potassium persulfate are dissolved in 10 parts of water for later use. Simultaneously, the monomer and the initiator solution are added dropwise, the temperature is raised to 85 ℃ after the completion of the dropwise addition within 2 hours, the temperature is kept for 0.5 hour, the pH is regulated to be neutral by 25 percent NaOH solution, and the temperature is reduced and the material is discharged. And then the hydrogel enters a spray drying tower for drying, so that the hydrogel is crosslinked while evaporating water, and the temperature-stimulus-responsive intelligent hydrogel material is obtained.
Example 2
Dissolving 40 parts of animal collagen base obtained by hydrolyzing sheep skin with protease in water, and heatingTo 70-80 ℃. Uniformly mixing 10 parts of N-isopropyl acrylamide, 10 parts of N-N-propyl acrylamide, 25 parts of acrylamide, 5 parts of acrylic acid and 2 parts of ethylene glycol dimethacrylate for later use. 2 parts of sodium peroxide are dissolved in 10 parts of water for later use. Simultaneously starting to drop the monomer and the initiator solution, heating to 85 ℃ after the completion of the drop in 2 hours, preserving heat for 0.5 hour, and using 25 percent of Na 2 CO 3 And regulating the pH value of the solution to be neutral, and cooling and discharging. And then the hydrogel enters a spray drying tower for drying, so that the hydrogel is crosslinked while evaporating water, and the temperature-stimulus-responsive intelligent hydrogel material is obtained.
Example 3
35 parts of animal collagen base obtained by hydrolyzing cow leather by protease is dissolved in water, and the temperature is raised to 70-80 ℃. Uniformly mixing 10 parts of N-isopropyl acrylamide, 10 parts of N-ethyl acrylamide, 20 parts of acrylamide, 5 parts of acrylic acid, 5 parts of N, N-diethyl acrylamide and 2 parts of triethylene glycol dimethacrylate for later use. 2 parts of ammonium persulfate was dissolved in 10 parts of water for use. Simultaneously, the monomer and the initiator solution are added dropwise, the temperature is raised to 85 ℃ after the completion of the dropwise addition within 2 hours, the temperature is kept for 0.5 hour, and 25 percent of NaHCO is used 3 And regulating the pH value of the solution to be neutral, and cooling and discharging. And then the hydrogel enters a spray drying tower for drying, so that the hydrogel is crosslinked while evaporating water, and the temperature-stimulus-responsive intelligent hydrogel material is obtained.
Example 4 temperature stimulus responsive intelligent hydrogel materials were compared with the water absorption and release functions of conventional hydrogels.
The temperature stimulus responsive intelligent hydrogel prepared in example 1 was compared with conventional commercial hydrogel in terms of water absorption and release properties, and the results are shown in table 1. It can be seen that as the temperature increases from 10 ℃ to 50 ℃, the water absorption of the temperature stimulus responsive intelligent hydrogel material decreases sharply from 2000% to 300%, manifesting as a high temperature water release; low temperature water absorption (shown in figures 1 and 2). Whereas the water absorption of conventional hydrogels does not change much throughout the temperature change.
TABLE 1 comparison of Water absorption and Release Functions
| Hydrogel species | Water absorption (10 ℃ C.,%) | Water absorption (50 ℃ C.,%) |
| Degradable temperature-sensitive intelligent hydrogel | 2000 | 300 |
| Conventional hydrogels | 1500 | 1800 |
Example 5 comparison of degradation Properties of temperature-stimulus-responsive Intelligent hydrogel Material with conventional hydrogels
The results of comparing the degradation performance of the temperature stimulus-responsive intelligent hydrogel material prepared in example 1 with that of a conventional commercial hydrogel (weight percent is the weight retention rate after degradation) are shown in table 2. It can be seen that the weight retention percentage of the temperature-stimulated responsive intelligent hydrogel is sharply reduced from 55% to 25% with the prolonged degradation time, and the degradation is faster. Whereas the weight retention percentage of conventional hydrogels was reduced from 95% to 85%, degradation was slow.
Table 2 degradation performance comparison
The specification and figures are to be regarded in an illustrative rather than a restrictive sense, and one skilled in the art, in light of the teachings of this invention, may make various substitutions and alterations to some of its features without the need for inventive faculty, all being within the scope of this invention.
Claims (9)
1. The preparation method of the temperature stimulus response type intelligent hydrogel material is characterized by comprising the following steps of:
s1, uniformly mixing an acrylic acid monomer with a temperature response function and an acrylic acid monomer with strong water absorption capacity to prepare a monomer solution for later use; dissolving an initiator in water for standby;
s2, dissolving animal collagen in water, heating to 70-80 ℃, then simultaneously dropwise adding the monomer solution and the initiator solution in the S1, heating to 85 ℃ after the completion of dropwise adding in 2 hours, preserving heat for 0.5 hour, regulating pH to be neutral by using 25% alkaline solution, cooling and discharging, and drying in a spray drying tower to obtain the temperature stimulus response type intelligent hydrogel material.
2. The preparation method according to claim 1, wherein the preparation method comprises the following steps of: 30-50 parts of animal collagen, 10-30 parts of acrylic acid monomer with temperature response function, 10-30 parts of acrylic acid monomer with strong water absorption capacity, 2-5 parts of cross-linking agent and 2-5 parts of initiator.
3. The method according to claim 1, wherein the animal collagen is obtained by degrading animal skin and waste scraps; the degradation is one of high-temperature hydrolysis and enzyme hydrolysis, and the molecular weight of the animal collagen after degradation is 2K-65K.
4. The method according to claim 1, wherein the acrylic monomer having a temperature response function is one or two of N-isopropyl acrylamide, N-propyl acrylamide, N-ethyl acrylamide, and N, N-diethyl acrylamide.
5. The method according to claim 1, wherein the acrylic monomer having strong water absorption ability is one or two of acrylic acid, hydroxyethyl acrylate and acrylamide.
6. The method according to claim 1, wherein the crosslinking agent is one of divinylbenzene, trimethylolpropane trimethacrylate, polyethylene glycol dimethacrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate.
7. The method according to claim 1, wherein the initiator is one of ammonium persulfate, potassium persulfate, sodium peroxide, and hydrogen peroxide.
8. The method according to claim 1, wherein the alkaline substance is one of sodium hydroxide, sodium carbonate and sodium bicarbonate.
9. The temperature-responsive intelligent hydrogel material prepared by the preparation method according to any one of claims 1 to 9.
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