CN110776707A - Adhesive hydrogel and preparation method and application thereof - Google Patents
Adhesive hydrogel and preparation method and application thereof Download PDFInfo
- Publication number
- CN110776707A CN110776707A CN201810858891.2A CN201810858891A CN110776707A CN 110776707 A CN110776707 A CN 110776707A CN 201810858891 A CN201810858891 A CN 201810858891A CN 110776707 A CN110776707 A CN 110776707A
- Authority
- CN
- China
- Prior art keywords
- ammonium chloride
- polyacrylic acid
- trimethyl ammonium
- hydrogel
- adhesive hydrogel
- 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.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use 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; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use 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; Derivatives of such polymers
- C08J2433/04—Characterised by the use 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; Derivatives of such polymers esters
- C08J2433/14—Characterised by the use 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; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
Abstract
The invention discloses a viscous hydrogel and a preparation method and application thereof, firstly, acryloyloxyethyl trimethyl ammonium chloride is dispersed in deionized water; secondly, adding an initiator and a catalyst into the solution obtained in the previous step, stirring and dissolving in an ice bath to form a reaction system: standing the reaction system at 25-70 ℃ for reaction to obtain polyacryl oxyethyl trimethyl ammonium chloride; and finally, adding the obtained polyacrylic acyl oxyethyl trimethyl ammonium chloride into a polyacrylic acid aqueous solution, oscillating to obtain a product, and cleaning to obtain the target viscous hydrogel. The invention utilizes supermolecule acting force to compound two water-soluble polymers with different charge attributes to prepare the viscous and stretchable hydrogel, and the hydrogel has ion conduction property, is sensitive to temperature and pressure change and is expected to be used as a flexible temperature and pressure sensing device.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to an adhesive hydrogel and a preparation method and application thereof.
Background
The hydrogel is a soft material having a three-dimensional network structure and containing a large amount of moisture, and can be obtained by a physical or chemical method. The hydrogel has the characteristics of good biocompatibility, elasticity and the like, so that the hydrogel can be applied to various fields, such as drug carriers, artificial muscles, medical dressings and sensors. The hydrogel has a special three-dimensional porous structure, which is beneficial to the conduction of electrolyte ions and the occurrence of interface action, so that hydrogel-based sensing devices have been developed. At present, most of hydrogel-based sensing devices are made by filling an ionic electrolyte in hydrogel to give ionic conductivity, and further by structural design, a force-sensitive sensor (capturing an electrical signal generated by stretching or compressing) is obtained. But temperature sensitive hydrogel-based sensors have yet to be developed. In addition, a general hydrogel-based sensor needs a double-sided tape to be fixed when contacting with an object to be tested, which may cause a decrease in the accuracy of the test because the sensor does not directly contact with the object to be tested. If the hydrogel is viscous, the hydrogel can be prevented from being fixed by using a rubber belt, and can be directly contacted with an object to be tested, so that signals can be more accurately sensed and transmitted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an adhesive hydrogel and a preparation method and application thereof, wherein the adhesive hydrogel is prepared by compounding two water-soluble polymers with different charge attributes by utilizing supermolecular acting force, has an ion conducting property, is sensitive to temperature and pressure changes, and is expected to be used as a flexible temperature and pressure sensing device.
The technical purpose of the invention is realized by the following technical scheme:
an adhesive hydrogel is composed of polyacrylic acid and polyacrylic acid ethyl trimethyl ammonium chloride, wherein the mass ratio of the polyacrylic acid to the polyacrylic acid ethyl trimethyl ammonium chloride is (10-20): 1, the concentration of polyacrylic acid is 0.1-0.5 g/ml water.
And the mass ratio of polyacrylic acid to polyacryloyloxyethyltrimethylammonium chloride is (12-16): 1.
also, polyacrylic acid (PAA) has a weight average molecular weight of 1 to 5 ten thousand.
Furthermore, the concentration of polyacrylic acid is 0.2-0.5 g per ml of water.
Further, the polyacryloyloxyethyltrimethylammonium chloride is prepared by homopolymerizing 1 to 5 parts by mass of acryloyloxyethyltrimethylammonium chloride, preferably 1 to 3 parts by mass of acryloyloxyethyltrimethylammonium chloride, each part by mass being 1 g.
Also, a method for preparing poly (acryloyloxyethyltrimethyl ammonium chloride) (PDAC) according to the following steps:
step 1, uniformly dispersing a monomer of acryloyloxyethyl trimethyl ammonium chloride (DAC) in deionized water;
and 2, adding an initiator and a catalyst Tetramethylethylenediamine (TEMED) into the solution obtained in the step 1, stirring in an ice bath to dissolve and uniformly disperse to form a reaction system:
and 3, standing the reaction system obtained in the step 2 at 25-70 ℃ for reaction to obtain the poly (acryloyloxyethyl trimethyl ammonium chloride) (PDAC).
Wherein the concentration of the acryloyloxyethyltrimethyl ammonium chloride in the deionized water is 0.2-1 g per ml of the deionized water.
The initiator is Ammonium Persulfate (APS), and the dosage of the initiator is 3-6 mg/g of monomer relative to the mass of the acryloyloxyethyl trimethyl ammonium chloride monomer (namely, 3-6 mg of initiator is used per g of acryloyloxyethyl trimethyl ammonium chloride monomer).
The amount of tetramethylethylenediamine used as the catalyst is 10 to 15. mu.L/g of monomer relative to the mass of acryloyloxyethyltrimethylammonium chloride monomer (i.e., 10 to 15. mu.L of catalyst per g of acryloyloxyethyltrimethylammonium chloride monomer).
The reaction temperature is preferably 50 to 70 ℃ and the reaction time is 4 to 24 hours, preferably 6 to 15 hours.
After the polymerization reaction is finished, the obtained PDAC aqueous solution is dialyzed for 3-4 times (the molecular weight cut-off is selected to be 3000-5000) to remove unreacted monomers and other small molecules, and then the PDAC polymer is obtained by drying at 60 ℃.
A preparation method of adhesive hydrogel comprises the following steps: dissolving polyacryloyloxyethyltrimethyl ammonium chloride in deionized water to form a uniform polyacryloyloxyethyltrimethyl ammonium chloride aqueous solution, adding the polyacryloyloxyethyltrimethyl ammonium chloride aqueous solution into a polyacrylic acid aqueous solution, oscillating and stirring to obtain a gel product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel.
The oscillation stirring is realized by selecting a mechanical mode or ultrasonic mode.
The electrical property of the viscous hydrogel changes along with the temperature and pressure changes, and the viscous hydrogel has good flexibility and certain electrical conductivity, and can be used as temperature and pressure sensing materials, namely the application in the temperature sensing materials and the pressure sensing materials.
Compared with the prior art, the invention utilizes polyacrylic acid with electronegative functional groups as a framework, and further constructs a cross-linked structure with polyacrylic acyl oxyethyl trimethyl ammonium chloride with electropositivity through the supermolecule effect to obtain hydrogel; while utilizing the cohesive properties of low molecular weight polyacrylic acids, the resulting hydrogels exhibit adhesive properties. The hydrogel prepared by the invention can be formed into any shape, shows good flexibility and certain electrical conductivity, has electrical properties sensitive to temperature and pressure changes, and can be used as a flexible temperature and pressure sensing material.
Drawings
FIG. 1 is a photograph showing the tensile properties of the hydrogel prepared according to the present invention.
FIG. 2 is a schematic diagram of the structure of a sample resistance measuring instrument (temperature change) used in the present invention.
FIG. 3 is a graph showing the temperature-sensitive property test curve of the hydrogel prepared by the present invention.
FIG. 4 is a schematic diagram of the sample resistance measuring apparatus used in the present invention (pressure change).
FIG. 5 is a graph showing the pressure-sensitive characteristics of the hydrogel prepared according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings by way of specific examples. Acryloxyethyltrimethylammonium chloride was obtained from Beijing Bailingwei Tech Co., Ltd, ammonium persulfate was obtained from Tianjin Kemi Euro Chemicals Co., Ltd, tetramethylethylenediamine was obtained from Shanghai Aradin Biotech Co., Ltd, and polyacrylic acid solution was obtained from Shanghai Mielin Biotech Co., Ltd. Ultrasonic oscillation is adopted to realize the water gelation of the PDAC aqueous solution and the polyacrylic acid solution.
Example 1
(1) 2g of acryloyloxyethyl trimethyl ammonium chloride monomer is uniformly dispersed in 5ml of deionized water;
(2) adding 10mg of initiator ammonium persulfate and 20ul of catalyst tetramethylethylenediamine into the solution obtained in the step 1), wherein the ice bath temperature is 5 ℃, and stirring in the ice bath for 20min to form a reaction system;
(3) standing the reaction system obtained in the step 2) at 25 ℃ for 12h to obtain polyacryloyloxyethyl trimethyl ammonium chloride;
(4) and (3) dialyzing the PDAC aqueous solution obtained in the step (3) for 3-4 times to remove unreacted monomers and other small molecules, drying at 60 ℃ to obtain a PDAC polymer, and preparing the PDAC polymer into a PDAC aqueous solution with the concentration of 0.1 g/ml.
(5) And (3) adding 1ml of the PDAC aqueous solution obtained in the step (4) into 5ml of polyacrylic acid solution (the concentration of the polyacrylic acid aqueous solution is 0.2g/ml), oscillating to obtain a product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel.
Example 2
(1) Uniformly dispersing 1g of acryloyloxyethyl trimethyl ammonium chloride monomer in 5ml of deionized water;
(2) adding 6mg of initiator ammonium persulfate and 15ul of catalyst tetramethylethylenediamine into the solution obtained in the step 1), wherein the ice bath temperature is 5 ℃, and stirring in an ice bath for 20min to form a reaction system;
(3) standing the reaction system obtained in the step 2) at 50 ℃ for 10h to obtain polyacryloyloxyethyl trimethyl ammonium chloride;
(4) and (3) dialyzing the PDAC aqueous solution obtained in the step (3) for 3-4 times to remove unreacted monomers and other small molecules, drying at 60 ℃ to obtain a PDAC polymer, and preparing the PDAC polymer into a PDAC aqueous solution with the concentration of 0.1 g/ml.
(5) And (3) adding 1ml of the PDAC aqueous solution obtained in the step (4) into 4ml of polyacrylic acid solution (the concentration of the polyacrylic acid aqueous solution is 0.5g/ml), oscillating to obtain a product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel.
Example 3
(1) 4g of acryloyloxyethyl trimethyl ammonium chloride monomer is uniformly dispersed in 5ml of deionized water;
(2) adding 12mg of initiator ammonium persulfate and 40ul of catalyst tetramethylethylenediamine into the solution obtained in the step 1), wherein the ice bath temperature is 5 ℃, and stirring in the ice bath for 20min to form a reaction system;
(3) standing the reaction system obtained in the step 2) at 70 ℃ for 6 hours to obtain polyacryloyloxyethyl trimethyl ammonium chloride;
(4) and (3) dialyzing the PDAC aqueous solution obtained in the step (3) for 3-4 times to remove unreacted monomers and other small molecules, drying at 60 ℃ to obtain a PDAC polymer, and preparing the PDAC polymer into a PDAC aqueous solution with the concentration of 0.1 g/ml.
(5) And (3) adding 1ml of the PDAC aqueous solution obtained in the step (4) into 6ml of polyacrylic acid solution (the concentration of the polyacrylic acid aqueous solution is 0.2g/ml), oscillating to obtain a product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel.
Example 4
(1) Uniformly dispersing 3g of acryloyloxyethyl trimethyl ammonium chloride monomer in 5ml of deionized water;
(2) adding 15mg of initiator ammonium persulfate and 36ul of catalyst tetramethylethylenediamine into the solution obtained in the step 1), wherein the ice bath temperature is 5 ℃, and stirring in the ice bath for 20min to form a reaction system;
(3) standing the reaction system obtained in the step 2) at 70 ℃ for 6 hours to obtain polyacryloyloxyethyl trimethyl ammonium chloride;
(4) and (3) dialyzing the PDAC aqueous solution obtained in the step (3) for 3-4 times to remove unreacted monomers and other small molecules, drying at 60 ℃ to obtain a PDAC polymer, and preparing the PDAC polymer into a PDAC aqueous solution with the concentration of 0.1 g/ml.
(5) And (3) adding 1ml of the PDAC aqueous solution obtained in the step (4) into 8ml of polyacrylic acid solution (the concentration of the polyacrylic acid aqueous solution is 0.2g/ml), oscillating to obtain a product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel.
Example 5
(1) Uniformly dispersing 5g of acryloyloxyethyl trimethyl ammonium chloride monomer in 5ml of deionized water;
(2) adding 20mg of initiator ammonium persulfate and 50ul of catalyst tetramethylethylenediamine into the solution obtained in the step 1), wherein the ice bath temperature is 5 ℃, and stirring in the ice bath for 20min to form a reaction system;
(3) standing the reaction system obtained in the step 2) at 50 ℃ for 15h to obtain polyacryloyloxyethyl trimethyl ammonium chloride;
(4) and (3) dialyzing the PDAC aqueous solution obtained in the step (3) for 3-4 times to remove unreacted monomers and other small molecules, drying at 60 ℃ to obtain a PDAC polymer, and preparing the PDAC polymer into a PDAC aqueous solution with the concentration of 0.1 g/ml.
(5) And (3) adding 1ml of the PDAC aqueous solution obtained in the step (4) into 5ml of polyacrylic acid solution (the concentration of the polyacrylic acid aqueous solution is 0.4g/ml), oscillating to obtain a product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel.
The hydrogel prepared according to the technical scheme of the invention has the following structure, macroscopical structure is shown in figure 1, flexibility of the hydrogel obtained by the invention is shown, and stretching can reach 1000%.
And (3) testing temperature-sensitive performance: the test was carried out using the resistance profile of a TH2830 digital bridge meter (available from Council electronics, Inc., of Changzhou), with a scanning frequency of 1KHz, and with one measurement value recorded every 0.3 seconds. The test specimens were 30X 5X 1 mm-sized bars, measured in the manner shown in FIG. 2. The change of the electric signal when a 35 c heat source was brought close to the sample without contacting the sample was measured at a room temperature of 25 c, and the measurement results are shown in fig. 3. As can be seen from FIG. 3, when the heat source at 35 ℃ is close to the sample, there is a significant increase in the resistance signal of the sample; when the heat source is far away from the sample, the resistance signal of the sample is obviously reduced, which indicates that the hydrogel prepared by the invention is sensitive to temperature change and can be used for preparing a temperature-sensitive sensor (namely the application in preparing the temperature-sensitive sensor).
Pressure sensitive performance test: the test was carried out using the capacitance profile of a TH2830 digital bridge meter (available from Council electronics, Inc., of Changzhou), with a scanning frequency of 1KHz, and with one measurement value recorded every 0.3 seconds. A30X 10X 1mm sample wafer and a dielectric layer (3MVHB) were formed into a sandwich structure as shown in FIG. 4. The pressure sensitive test results are shown in figure 5. As can be seen from fig. 5, when no stress is applied to the device shown in fig. 4, the device exhibits a stable capacitance value, the capacitance value of the device changes significantly with the application of the stress, the external force is removed, the capacitance value can be restored to the initial value, and the designed pressure-sensitive device can still sense the pressure after several cycles of testing, which indicates that the hydrogel obtained in the present invention has the potential for preparing a pressure sensor (i.e., application in preparing a pressure-sensitive sensor).
The preparation of the hydrogel of the invention can be realized by adjusting the preparation process parameters according to the content of the invention, and the hydrogel shows the performances basically consistent with the examples. The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. An adhesive hydrogel, which is characterized by consisting of polyacrylic acid and polyacrylic acid ethyl trimethyl ammonium chloride, wherein the mass ratio of the polyacrylic acid to the polyacrylic acid ethyl trimethyl ammonium chloride is (10-20): 1, the concentration of polyacrylic acid is 0.1-0.5 g/ml water, and the polyacrylic acid oxyethyl trimethyl ammonium chloride is prepared by homopolymerization of 1-5 parts by mass of acrylic acid oxyethyl trimethyl ammonium chloride.
2. The adhesive hydrogel of claim 1, wherein the mass ratio of polyacrylic acid to poly (acryloxyethyltrimethylammonium chloride) is (12-16): 1.
3. an adhesive hydrogel according to claim 1 or 3, wherein the polyacrylic acid has a weight average molecular weight of 1 to 5 ten thousand.
4. An adhesive hydrogel according to claim 1 wherein the concentration of polyacrylic acid is 0.2 to 0.5g/ml water.
5. The adhesive hydrogel of claim 1, wherein the polyacrylamide is prepared by homopolymerizing 1 to 3 parts by mass of acryloyloxyethyltrimethyl ammonium chloride.
6. The adhesive hydrogel of claim 1, wherein the polyacrylamide gel is prepared by the following steps:
step 1, uniformly dispersing acryloyloxyethyl trimethyl ammonium chloride monomers in deionized water;
and 2, adding an initiator and a catalyst tetramethyl ethylenediamine into the solution obtained in the step 1, stirring in an ice bath to dissolve, and uniformly dispersing to form a reaction system:
and 3, standing the reaction system obtained in the step 2 at 25-70 ℃ for reaction to obtain the polyacryl oxyethyl trimethyl ammonium chloride.
7. The adhesive hydrogel of claim 6, wherein the concentration of acryloyloxyethyltrimethylammonium chloride in deionized water is from 0.2 to 1g per ml of deionized water; the initiator is ammonium persulfate, and the dosage of the initiator is 3-6 mg/g of monomer relative to the mass of the acryloyloxyethyl trimethyl ammonium chloride monomer; the dosage of the catalyst tetramethylethylenediamine is 10-15 mu L/g monomer relative to the mass of the acryloyloxyethyltrimethyl ammonium chloride monomer.
8. An adhesive hydrogel according to claim 6 wherein the reaction temperature is preferably 50 to 70 ℃ and the reaction time is 4 to 24 hours, preferably 6 to 15 hours.
9. A method for preparing an adhesive hydrogel, comprising the steps of: dissolving polyacryloyloxyethyltrimethyl ammonium chloride in deionized water to form a uniform polyacryloyloxyethyltrimethyl ammonium chloride aqueous solution, adding the polyacryloyloxyethyltrimethyl ammonium chloride aqueous solution into a polyacrylic acid aqueous solution, oscillating and stirring to obtain a gel product, taking out the product, and cleaning the surface with deionized water to obtain the target viscous hydrogel, wherein the oscillating and stirring is realized mechanically or ultrasonically.
10. Use of an adhesive hydrogel according to claim 1 in temperature-sensing and pressure-sensing materials, i.e. in the preparation of pressure-and temperature-sensitive sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858891.2A CN110776707A (en) | 2018-07-31 | 2018-07-31 | Adhesive hydrogel and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858891.2A CN110776707A (en) | 2018-07-31 | 2018-07-31 | Adhesive hydrogel and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110776707A true CN110776707A (en) | 2020-02-11 |
Family
ID=69382751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810858891.2A Pending CN110776707A (en) | 2018-07-31 | 2018-07-31 | Adhesive hydrogel and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110776707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984235A (en) * | 2021-11-10 | 2022-01-28 | 武汉大学 | Flexible stretchable thermocouple based on ionic thermoelectric hydrogel and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008027989A2 (en) * | 2006-08-29 | 2008-03-06 | Florida State University Research Foundation, Inc. | Polymer mechanical damping composites and methods of production |
| CN105732999A (en) * | 2016-04-18 | 2016-07-06 | 北京师范大学 | High-strength crosslinked hydrogel, elastomer and preparation method of high-strength crosslinked hydrogel and elastomer |
| CN107753421A (en) * | 2017-11-07 | 2018-03-06 | 天津大学 | A kind of antibiont adhesion polyelectrolyte hydrogel and preparation method and application |
-
2018
- 2018-07-31 CN CN201810858891.2A patent/CN110776707A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008027989A2 (en) * | 2006-08-29 | 2008-03-06 | Florida State University Research Foundation, Inc. | Polymer mechanical damping composites and methods of production |
| CN105732999A (en) * | 2016-04-18 | 2016-07-06 | 北京师范大学 | High-strength crosslinked hydrogel, elastomer and preparation method of high-strength crosslinked hydrogel and elastomer |
| CN107753421A (en) * | 2017-11-07 | 2018-03-06 | 天津大学 | A kind of antibiont adhesion polyelectrolyte hydrogel and preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| UMIT GULYUZ等: "Self-Healing Poly(acrylic acid) Hydrogels with Shape Memory Behavior of High Mechanical Strength", 《MACROMOLECULES》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984235A (en) * | 2021-11-10 | 2022-01-28 | 武汉大学 | Flexible stretchable thermocouple based on ionic thermoelectric hydrogel and preparation method thereof |
| CN113984235B (en) * | 2021-11-10 | 2024-04-19 | 武汉大学 | Flexible stretchable thermocouple based on ionic thermoelectric hydrogel and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xia et al. | A flexible, adhesive and self-healable hydrogel-based wearable strain sensor for human motion and physiological signal monitoring | |
| Jin et al. | Chitosan-driven skin-attachable hydrogel sensors toward human motion and physiological signal monitoring | |
| KR102444310B1 (en) | Self-healable ion-conductive gel composition for three-dimensional printing | |
| Hao et al. | Low-Temperature tolerance and conformal adhesion zwitterionic hydrogels as electronic skin for strain and temperature responsiveness | |
| CN113549175B (en) | Multifunctional conductive ionic liquid gel and preparation method and application thereof | |
| Zhao et al. | A highly stretchable and anti-freezing silk-based conductive hydrogel for application as a self-adhesive and transparent ionotronic skin | |
| Zeng et al. | Anti-freezing dual-network hydrogels with high-strength, self-adhesive and strain-sensitive for flexible sensors | |
| CN110591002A (en) | Multifunctional chitosan composite hydrogel and preparation method and application thereof | |
| CN113773445B (en) | Preparation method and application of hydrogel flexible touch sensor | |
| CN109180962A (en) | A kind of preparation method of PAA class pectin self-healing hydrogel and its capacitance type sensor | |
| CN112414294B (en) | Preparation method of high-sensitivity sandwich interlayer strain sensor | |
| CN112679755B (en) | Preparation method of MXene-enhanced double-network self-healing conductive hydrogel | |
| Kim et al. | Electroactive characteristics of interpenetrating polymer network hydrogels composed of poly (vinyl alcohol) and poly (N‐isopropylacrylamide) | |
| CN112679753A (en) | Super-soft conductive self-healing hydrogel and preparation method and application thereof | |
| CN110776707A (en) | Adhesive hydrogel and preparation method and application thereof | |
| Li et al. | Chitosan-based double cross-linked ionic hydrogels as a strain and pressure sensor with broad strain-range and high sensitivity | |
| Wang et al. | Polysaccharide-based high-strength, self-healing and ultra-sensitive wearable sensors | |
| Wang et al. | Poly (N, N-dimethyl) acrylamide-based ion-conductive gel with transparency, self-adhesion and rapid self-healing properties for human motion detection | |
| Guenther et al. | Non-linear effects in hydrogel-based chemical sensors: experiment and modeling | |
| CN113372492A (en) | High-performance polyion liquid gel, multi-mode flexible sensor and preparation method thereof | |
| Sun et al. | Silver nanowire/polyacrylamide/gelatin flexible stress, strain and temperature sensor | |
| CN109503755B (en) | Temperature-sensitive polymer single-ion conductive intelligent gel and preparation method thereof | |
| Lee et al. | Chitosan-polypyrrole fiber for strain sensor | |
| CN113150326B (en) | Preparation method of transparent self-adhesive conductive hydrogel | |
| Choi et al. | Nature of water in synthetic hydrogels: III. Dilatometry, specific conductivity, and dielectric relaxation of poly (2, 3-dihydroxypropyl methacrylate) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200211 |
|
| RJ01 | Rejection of invention patent application after publication |