Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of responsive polymeric ionic liquid hydrogel and swelling test thereof

A technology of polymerizing ionic liquids and ionic liquids, which is applied in the field of preparation of responsive polymeric ionic liquid hydrogels, can solve problems such as poor swelling, slow response, and single type, and achieve the effects of easy operation, increased water absorption rate, and increased surface area

Inactive Publication Date: 2018-10-26
LIAONING UNIVERSITY
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of traditional hydrogel monomer types such as single type, poor swelling property and slow response, the present invention provides a preparation method of a novel responsive polymeric ionic liquid hydrogel and its swelling property test

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of responsive polymeric ionic liquid hydrogel and swelling test thereof
  • Preparation method of responsive polymeric ionic liquid hydrogel and swelling test thereof
  • Preparation method of responsive polymeric ionic liquid hydrogel and swelling test thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: the preparation of ionic liquid

[0041] 1. Synthesis of 1-vinyl-3-ethylimidazolium bromide (EVImBr): Weigh N-vinylimidazole in a reaction flask, N 2 Under protection, bromoethane was added dropwise to the reaction flask, and stirred at reflux at 70°C for 20h to obtain a white solid. The resulting white solid product was dissolved in acetonitrile to obtain a colorless transparent solution, which was slowly added dropwise to ethyl acetate to precipitate, filtered with suction, and vacuum-dried at 60°C for 12 hours to obtain a white solid. The synthetic route is as follows:

[0042]

[0043]2. Synthesis of 1-vinyl-3-hydroxyethylimidazolium chloride (HEVImCl): add N-vinylimidazole, chloroethanol, and methanol into the flask and mix, and stir at reflux at 60°C under nitrogen protection for 96 hours to obtain dark brown viscous liquid. The obtained viscous liquid was diluted with methanol, precipitated in ethyl acetate, left standing in the refrigerator f...

Embodiment 2

[0049] Example 2: Responsive polymeric ionic liquid hydrogel 1

[0050] (1) Preparation

[0051] Accurately weigh 6.3633g (36.4mmol) of HEVImCl prepared in Example 1, 0.0884g (0.6mmol) of N,N'-methylenebisacrylamide in a 100ml beaker, add a mixed solvent of methanol and ethanol (wherein methanol, ethanol Each 10ml) is stirred to make each material mix homogeneously, and azobisisobutyronitrile 0.1992g (1.2mmol) is added therein to make it dissolve, and the mixed solution is transferred to a 25ml single-necked flask, and the N 2 After evacuating for 6 times, the flask was transferred to a 70°C oil bath and heated for 10 h. The obtained gel is immersed in ethanol solution, and the solution is changed every certain time until the solution is clear, then the gel is immersed in ultrapure water, and the water is changed every certain time until the ethanol is completely removed. A part of the resulting gel was vacuum-dried at 35°C, and the other part was freeze-dried for SEM testin...

Embodiment 3

[0070] Example 3: Responsive polymeric ionic liquid hydrogel 2

[0071] (1) Preparation

[0072]Accurately weigh 6.3633g (36.4mmol) of HEVImCl prepared in Example 1, 0.0884g (0.6mmol) of N,N'-methylenebisacrylamide in a 100ml beaker, add a mixed solvent of methanol and ethanol (wherein methanol, ethanol Each 10ml) is stirred to make each material mix homogeneously, and azobisisobutyronitrile 0.11195g (0.72mmol) is added therein to make it dissolve, and the mixed solution is transferred to a 25ml single-necked flask, and logical N 2 After evacuating for 6 times, the flask was transferred to a 70°C oil bath and heated for 10 h. The obtained gel is immersed in ethanol solution, and the solution is changed every certain time until the solution is clear, then the gel is immersed in ultrapure water, and the water is changed every certain time until the ethanol is completely removed. A part of the resulting gel was vacuum-dried at 35°C, and the other part was freeze-dried for SEM t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a responsive polymeric ionic liquid hydrogel and a swelling test thereof. The method firstly synthesizes ionic liquid by using vinyl imidazole as a rawmaterial; 2) then using the ionic liquid prepared in step 1) as a monomer, N, N-methylene bisacrylamide as a crosslinking agent and azobisisobutyronitrile as an initiator, and synthesizing by a monomer cross-linking polymerization method. In the view of the problems of single monomer type, poor swelling property, slow response and the like of a traditional monomer, the method designs and synthesizes two ionic liquid according to the characteristics of easy design of the ionic liquid, hopes to prepare a rapid-response homopolymeric hydrogel with multiple responsiveness and the like, studies swelling behaviors, and extends polyelectrolyte hydrogel swelling kinetic models.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a preparation method of a responsive polymerized ionic liquid hydrogel and a swelling test thereof. Background technique [0002] Polymer hydrogels are recognized as a class of environmentally friendly materials with good biocompatibility and have good application prospects in the field of biomedicine. Polymer hydrogels with environmental stimulus responsiveness, that is, smart hydrogels, have attracted more and more attention from scholars because of their various stimulus-responsive properties and the ability to conveniently select a certain property for use according to actual needs. Responsive new smart hydrogel materials have become a research hotspot. Responsive hydrogels refer to hydrogels that can respond to external environmental stimuli, and have high potential application value in the field of biomedicine and industrial and agricultural production. Ionic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F226/06C08F222/38G01N5/02
CPCC08F226/06G01N5/02C08F222/38
Inventor 张国林殷子玲邱红芳吴秋华刘学矣杰宋溪明
Owner LIAONING UNIVERSITY
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com