CN116606458A - Preparation method and application of multifunctional ionic gel - Google Patents
Preparation method and application of multifunctional ionic gel Download PDFInfo
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- CN116606458A CN116606458A CN202310491690.4A CN202310491690A CN116606458A CN 116606458 A CN116606458 A CN 116606458A CN 202310491690 A CN202310491690 A CN 202310491690A CN 116606458 A CN116606458 A CN 116606458A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims abstract description 20
- FQERWQCDIIMLHB-UHFFFAOYSA-N 1-ethyl-3-methyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound [Cl-].CC[NH+]1CN(C)C=C1 FQERWQCDIIMLHB-UHFFFAOYSA-N 0.000 claims abstract description 15
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 15
- GJKGAPPUXSSCFI-UHFFFAOYSA-N 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone Chemical compound CC(C)(O)C(=O)C1=CC=C(OCCO)C=C1 GJKGAPPUXSSCFI-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 3
- 238000004090 dissolution Methods 0.000 claims abstract description 3
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 12
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims 3
- 239000002608 ionic liquid Substances 0.000 abstract description 23
- 238000012544 monitoring process Methods 0.000 abstract description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 3
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 77
- -1 polytetrafluoroethylene Polymers 0.000 description 12
- 229920000642 polymer Polymers 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 230000000379 polymerizing effect Effects 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 102100026735 Coagulation factor VIII Human genes 0.000 description 6
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 6
- NJMWOUFKYKNWDW-UHFFFAOYSA-N 1-ethyl-3-methylimidazolium Chemical compound CCN1C=C[N+](C)=C1 NJMWOUFKYKNWDW-UHFFFAOYSA-N 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 238000010382 chemical cross-linking Methods 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- KGGBUGLHJUGXEF-UHFFFAOYSA-N [6-hydroxy-4-(2-hydroxyethoxy)-6-methylcyclohexa-2,4-dien-1-yl]-phenylmethanone Chemical compound OC1(C(C(=O)C2=CC=CC=C2)C=CC(=C1)OCCO)C KGGBUGLHJUGXEF-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 1
- 238000001157 Fourier transform infrared spectrum Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 108010025899 gelatin film Proteins 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002892 organic cations Chemical class 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
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- 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
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
- C08J3/096—Nitrogen containing compounds
-
- 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
- C08F220/00—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 a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
-
- 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
- C08F220/00—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 a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- 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
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- 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
- C08J2333/24—Homopolymers or copolymers of amides or imides
- C08J2333/26—Homopolymers or copolymers of acrylamide or methacrylamide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a preparation method and application of multifunctional ionic gel, which comprises the steps of adding hydroxyethyl methacrylate and acrylamide into 1-ethyl-3-methylimidazole chloride ionic liquid, adding N, N-dimethylformamide and 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone, performing ultrasonic dissolution at room temperature, and initiating polymerization reaction by utilizing ultraviolet light to obtain the multifunctional ionic gel. The multifunctional ionic gel is applied to medical detection and flexible wearable stress sensors. The preparation method is simple, and the obtained ionic gel has good conductivity, high transparency, mechanical property, adhesion property and sensing property, and has great potential in medical monitoring equipment, intelligent robots and wearable flexible sensor application.
Description
Technical Field
The invention belongs to the technical field of ionic gel materials, and relates to a preparation method and application of multifunctional ionic gel.
Background
The ionic gel is a gel material formed by fixing ionic liquid in a solid substrate, and has certain stretchability, good environmental stability, high conductivity, wide electrochemical window and the like. Ionic gels can be simply divided into physically crosslinked networks and chemically crosslinked networks, depending on the solid network. Physical cross-linking networks include hydrogen bonds, van der Waals interactions, pi-pi interactions and the like, however, physical gels generally take the form of jelly paste, and have great defects in mechanical strength, chemical cross-linking networks refer to the construction of covalent bond networks, ionic liquids are limited in covalent cross-linking networks, gel with higher mechanical strength can be formed generally, and the preparation methods reported at present are complex. Meanwhile, the ionic gel has multiple functionalities, which is beneficial to expanding the application fields. Therefore, the design and development of simple technology for preparing the multifunctional ionic gel has important theoretical and application values.
Ionic liquids are organic salts composed of organic cations and anions, which are generally liquid at room temperature. Has the advantages of high conductivity, difficult volatilization, nonflammability, stable physical and chemical properties, and the like. The ionic liquid and the polymer gel network are combined, so that the ionic gel is easy to form, and meanwhile, the advantages of extremely low vapor pressure, wide working temperature range, electrochemical stability and the like of the ionic liquid are maintained, and the multifunctional ionic gel can be effectively prepared. Among them, the compatibility and stability of the polymer network with the ionic liquid are important factors for preparing high-performance ionic gel, and poor compatibility and stability can lead to leakage of the ionic liquid and poor performance of the prepared ionic gel. It is a challenge to effectively select ionic liquids that match the polymer network so that the prepared ionic gels have good compatibility and stability.
Disclosure of Invention
The invention aims to provide a preparation method of multifunctional ionic gel with good compatibility and stability.
Another object of the present invention is to provide an application of the above preparation method for preparing multifunctional ionic gel.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a preparation method of the multifunctional ionic gel specifically comprises the following steps:
1) Respectively taking hydroxyethyl methacrylate (first monomer) and 1-ethyl-3-methylimidazole chloride (ionic liquid) according to a mass ratio of 1:2-5; respectively taking acrylamide, N-methylene bisacrylamide (cross-linking agent) and 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone (photoinitiator);
the mass ratio of the hydroxyethyl methacrylate to the acrylamide is 1:1-4;
the mass ratio of the N, N-methylene bisacrylamide to the hydroxyethyl methacrylate is 1:50-300;
the mass ratio of the 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone to the hydroxyethyl methacrylate is 1:100-400;
2) Adding hydroxyethyl methacrylate and acrylamide into 1-ethyl-3-methylimidazole chloride, adding N, N-methylenebisacrylamide and 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone, dissolving at room temperature by ultrasonic, pouring into polytetrafluoroethylene mould, and polymerizing under irradiation of ultraviolet lamp with wavelength of 365nm for at least 1min to obtain multifunctional ionic gel (IG x )，IG x X in (2) represents the mass of the ionic liquid.
The other technical scheme adopted by the invention is as follows: the multifunctional ionic gel prepared by the preparation method is applied to medical detection and flexible wearable stress sensors.
According to the preparation method, 1-ethyl-3-methylimidazole chloride is used as an ionic liquid solvent, hydroxyethyl methacrylate is used as a high-solubility polymer, acrylamide is used as a difficult-to-dissolve polymer, and ultraviolet light induction is carried out after ultrasonic dissolution, so that the multifunctional ionic gel is prepared.
The preparation method is mainly based on the physical crosslinking between the ionic liquid and the polymer through hydrogen bonds, and the covalent crosslinking agent MBA is added to realize the chemical crosslinking of the second network so as to form a covalent crosslinking network structure. -OH in HEMA and NH in Am 2 Hydrogen bond interactions are formed, while the c=c double bonds in the crosslinker MBA form chemical crosslinks with the c=c double bonds of HEMA and Am, further improving the mechanical properties. The synergistic effect of hydrogen bond and chemical crosslinking makes the prepared ionic gel multifunctional. [ EMIM ]]The imidazole cation in Cl forms a hydrogen bond with-OH in HEMA, [ EMIM ]]Cl is locked in the polymer network by hydrogen bonding, and cations and anions are free to move in the ionic gel, providing good conductivity to the ionic gel. Soft ionic gels are thus obtained without leakage of ionic liquid.
According to the preparation method disclosed by the invention, the 1-ethyl-3-methylimidazole chloride ionic liquid is selected, so that the ionic liquid can be well compatible with hydroxyethyl methacrylate and an acrylamide polymer network, the 1-ethyl-3-methylimidazole chloride is locked in the polymer network through a hydrogen bond, cations and anions in the ionic gel move freely, and meanwhile, the combination of physical crosslinking and chemical crosslinking ensures the stability of the ionic gel, so that the ionic gel with multifunction can be prepared. And the ultraviolet light initiated polymerization preparation process is simple and convenient, and the production cost is effectively reduced. The obtained multifunctional ionic gel has great potential in monitoring human body activities, medical monitoring equipment, man-machine interaction and wearable flexible sensor application.
Drawings
FIG. 1 is an infrared image of the ionic gel prepared in example 1.
FIG. 2 is a microscopic image of the ion gel prepared in example 1.
FIG. 3 is an energy dispersive X-ray (EDX) map of the ion gel prepared in example 1.
Fig. 4 is a schematic diagram showing the conductivity of the ionic gel prepared in example 1.
FIG. 5 is a schematic view showing the transparency of the ionic gel prepared in example 1.
FIG. 6 is a schematic view of the mechanical properties of the ionic gel prepared in example 1.
FIG. 7 is a schematic drawing showing the bonding of the ionic gel prepared in example 1 to glass.
FIG. 8 is a schematic diagram of the sensing performance of the ionic gel prepared in example 1.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
Example 1
Adding 0.2g of hydroxyethyl methacrylate and 0.4g of acrylamide into 0.6g of 1-ethyl-3-methylimidazole chloride, adding 0.0016g of N, N-methylenebisacrylamide and 0.0011g of 2-hydroxy-4- (2-hydroxyethoxy) -2-methylpropionacetone, dissolving by ultrasonic at room temperature, pouring into a polytetrafluoroethylene mold, and polymerizing under irradiation of an ultraviolet lamp with a wavelength of 365nm for at least 1min to obtain multifunctional ionic gel (IG 0.6 ）。
Example 1 an infrared spectrum of a multifunctional ionic gel was prepared as shown in fig. 1. FIG. 1 shows Am, HEMA, [ EMIM ]]Cl and IG 0.6 The FTIR spectrum of (c) demonstrates the intermolecular interactions inside the multifunctional gel. At 1572 cm −1 An imidazole positive ion vibration peak was observed at 1669cm -1 The absorption peak at Am is due to the c=c stretching vibration of Am, and 1669cm in the multifunctional ionic gel -1 The c=c stretching vibration peak was significantly reduced compared to Am, thus indicating successful polymerization of Am to PAm. HEMA at 3422cm -1 Showing a characteristic absorption peak of-OH. It is apparent that the stretching vibration peak of the-OH group in the multifunctional ionic gel moves to short wave number compared with HEMA, indicating that a large number of hydrogen bonds exist in the multifunctional ionic gel. At 754cm -1 A vibrational peak of Cl ions can be observed. The hydrogen bonding between the polymer and the ionic liquid proves that IG 0.6 Successful fusion.
Example 1 a microscopic morphology electron microscope image of a multifunctional ion gel was prepared as shown in fig. 2. FIG. 2 shows that the multifunctional ionic gel prepared by the preparation method of the invention has no holes inside, and the surface morphology shows the characteristic of having a high density network. The multifunctional ionic gel membrane has the characteristic of uniform structure.
Example 1 an EDX-mapped image of a multifunctional ion gel was obtained, as shown in fig. 3, demonstrating that C, O element of hydroxyethyl methacrylate, C, N element of acrylamide, and Cl and N elements of 1-ethyl-3-methylimidazole chloride salt in the multifunctional ion gel are distributed in the multifunctional ion gel material.
The conductivities of the multifunctional ionic gels at different ionic liquid contents were tested respectively, and the test results are shown in fig. 4.
The mass of the ionic liquid in the multifunctional ionic gel is 0.4g, 0.6g and 0.8g respectively, and the prepared multifunctional ionic gel has smaller resistance, higher conductivity and better conductivity along with the increase of the mass of the ionic liquid.
The electrostatic repulsive force between different ionic liquids and polymers can influence the compatibility of the polymers and the ionic liquids, and the poor affinity can lead to lower optical transmittance. The transparency test result of the multifunctional ion gel prepared in example 1 shows that the optical transmittance of the ion gel film is higher than 95% as shown in fig. 5. The ionic gel is coated on a school badge of 'northwest university', so that the ionic gel layer with the thickness of 2mm is formed, the school badge can be clearly observed, and the excellent transparency can enable the ionic gel to be applied to specific fields such as touch screens, man-machine interaction interfaces and the like.
Fig. 6 is a graph showing the mechanical property test results of the multifunctional ionic gel prepared in example 1, wherein the mechanical properties of the multifunctional ionic gel under different ionic liquid masses are tested, and [ EMIM ] Cl plays a role of a plasticizer in the multifunctional ionic gel, but as the [ EMIM ] Cl content increases, the tensile strength of the multifunctional ionic gel decreases, the elongation at break increases, and meanwhile, the conductivity of the multifunctional ionic gel is improved.
FIG. 7 is a schematic drawing showing the adhesion of the multifunctional ionic gel prepared in example 1 to glass. FIG. 7 shows that the multifunctional ionic gel has a tensile shear strength of 210Kpa on glass and exhibits good self-adhesion.
The multifunctional ionic gel prepared in example 1 is stuck on the joint of an index finger, two ends of the multifunctional ionic gel are connected with an electrochemical workstation by using a lead, the resistance of a sensor changes along with the movement of the finger, and the finger is repeatedly bent for 90 degrees, so that the sensing performance schematic diagram of the multifunctional ionic gel shown in fig. 8 is obtained. The results show that the relative resistance change value of the multifunctional ionic gel remains substantially unchanged. After repeated bending for many times, the multifunctional ionic gel still keeps complete performance and has high sensitivity. The multifunctional ionic gel prepared by the preparation method has good stable sensing performance.
Example 2
Adding 0.2g of hydroxyethyl methacrylate and 0.2g of acrylamide into 0.4g of 1-ethyl-3-methylimidazole chloride, adding 0.0008g of N, N-methylenebisacrylamide and 0.0005g of 2-hydroxy-4- (2-hydroxyethoxy) -2-methylpropionacetone, dissolving by ultrasonic at room temperature, pouring into a polytetrafluoroethylene mould, and polymerizing for at least 1min under irradiation of an ultraviolet lamp with a wavelength of 365nm to obtain multifunctional ionic gel (IG x ）。
Example 3
Adding 0.2g of hydroxyethyl methacrylate and 0.3g of acrylamide into 0.5g of 1-ethyl-3-methylimidazole chloride, adding 0.0012g of N, N-methylenebisacrylamide and 0.0008g of 2-hydroxy-4- (2-hydroxyethoxy) -2-methylpropionacetone, dissolving by ultrasonic at room temperature, pouring into a polytetrafluoroethylene mould, and polymerizing for at least 1min under irradiation of an ultraviolet lamp with a wavelength of 365nm to obtain multifunctional ionic gel (IG x ）。
Example 4
Adding 0.2g of hydroxyethyl methacrylate and 0.5g of acrylamide into 0.7g of 1-ethyl-3-methylimidazole chloride, adding 0.002g of N, N-methylenebisacrylamide and 0.0014g of 2-hydroxy-4- (2-hydroxyethoxy) -2-methylbenzophenone, dissolving by ultrasonic at room temperature, pouring into a polytetrafluoroethylene mold, and polymerizing for at least 1min under irradiation of an ultraviolet lamp with a wavelength of 365nm to obtain multifunctional ionic gel (IG x ）。
Example 5
Adding 0.2g of hydroxyethyl methacrylate and 0.6g of acrylamide into 0.8g of 1-ethyl-3-methylimidazole chloride, adding 0.0024g of N, N-methylenebisacrylamide and 0.0017g of 2-hydroxy-4- (2-hydroxyethoxy) -2-methylpropionacetone, dissolving by ultrasonic at room temperature, pouring into a polytetrafluoroethylene mould, and polymerizing for at least 1min under irradiation of an ultraviolet lamp with a wavelength of 365nm to obtain multifunctional ionic gel (IG x ）。
Example 6
Adding 0.2g of hydroxyethyl methacrylate and 0.7g of acrylamide into 0.9g of 1-ethyl-3-methylimidazole chloride, adding 0.0028g of N, N-methylenebisacrylamide and 0.002g of 2-hydroxy-4- (2-hydroxyethoxy) -2-methylbenzophenone, dissolving by ultrasonic at room temperature, pouring into a polytetrafluoroethylene mould, and polymerizing for at least 1min under irradiation of an ultraviolet lamp with a wavelength of 365nm to obtain the multifunctional ionic gel (IG x ）。
The structure and properties of the multifunctional ionic gels prepared in examples 2 to 6 were the same as those of the multifunctional ionic gel prepared in example 1.
Claims (4)
1. The preparation method of the multifunctional ionic gel is characterized by comprising the following steps of:
1) Taking hydroxyethyl methacrylate and 1-ethyl-3-methylimidazole chloride according to a mass ratio of 1:2-5; respectively taking acrylamide, N-methylene bisacrylamide and 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone;
the mass ratio of the hydroxyethyl methacrylate to the acrylamide is 1:1-4;
the mass ratio of the N, N-methylene bisacrylamide to the hydroxyethyl methacrylate is 1:50-300;
the mass ratio of the 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone to the hydroxyethyl methacrylate is 1:100-400;
2) Adding hydroxyethyl methacrylate and acrylamide into 1-ethyl-3-methylimidazole chloride, adding N, N-methylenebisacrylamide and 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone, performing ultrasonic dissolution at room temperature, and performing polymerization reaction under the irradiation of an ultraviolet lamp to obtain the multifunctional ionic gel.
2. The method for preparing a multifunctional ionic gel according to claim 1, wherein the polymerization is carried out for at least 1min under irradiation of ultraviolet lamp.
3. The method for preparing a multifunctional ionic gel according to claim 1 or 2, wherein the ultraviolet lamp emits ultraviolet light with a wavelength of 365 nm.
4. Use of an ionic gel prepared by the method for preparing a multifunctional ionic gel according to claim 1 in medical detection and flexible wearable stress sensor.
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| CN202310491690.4A CN116606458A (en) | 2023-05-05 | 2023-05-05 | Preparation method and application of multifunctional ionic gel |
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