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

Hydrogel composite material with near-infrared response temperature sensitive characteristic and method for preparing hydrogel composite material

A technology of sensitive properties and composite materials, which is applied in the field of hydrogel composite materials and its preparation, can solve the problems of low mechanical strength and achieve the effects of improving mechanical strength, excellent repeatability, and mild reaction conditions

Inactive Publication Date: 2019-04-23
ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with amide hydrogels, hydrogels based on Oligo (ethylene glycol) have attracted much attention due to their excellent biocompatibility and adjustable phase transition temperature, but their mechanical strength is low and Only temperature-induced phase transition is an important factor restricting the application of this type of hydrogel

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
  • Hydrogel composite material with near-infrared response temperature sensitive characteristic and method for preparing hydrogel composite material
  • Hydrogel composite material with near-infrared response temperature sensitive characteristic and method for preparing hydrogel composite material
  • Hydrogel composite material with near-infrared response temperature sensitive characteristic and method for preparing hydrogel composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]A hydrogel composite with temperature-sensitive properties of near-infrared response, made from the following raw materials by weight: 2-methyl-2-acrylate-2(2-methoxyethoxy)ethyl ester (MOE2MA) 3.0 g (0.016mol), 1.0 g of cellulose nanocrystal suspension (the quality of cellulose nanocrystal is 0.66% of the mass of polymerized monomer), 9.0 g of polydopamine nanoparticle suspension (the quality of PDA in the suspension is the mass of polymerized monomer 0.45% of ), 2.0 mg N,N-methylenebisacrylamide (crosslinker) and 20 mg ammonium persulfate (initiator), 10 mg N,N',N',N'-tetramethyldiethyl Amine (TEMD) made.

[0036] The cellulose nanocrystals are obtained from microcrystalline cellulose through strong acid hydrolysis, dialysis and purification, and exist in the state of an aqueous suspension. The diameter of the cellulose nanocrystals in the cellulose nanocrystal suspension is 10-30 nm, and the length is 100-100 nm. 400nm, the mass concentration is 2%.

[0037] The pre...

Embodiment 2

[0046] A hydrogel composite with near-infrared-responsive temperature-sensitive properties made from the following raw materials by weight: 2-methyl-2-acrylate-2(2-methoxyethoxy)ethyl ester (MOE 2 MA) 2.5g (0.013mol), 2.5g cellulose nanocrystal suspension (the mass of cellulose nanocrystal is 2.0% of the mass of polymerized monomer), 8.0 g polydopamine nanoparticle suspension (the mass of PDA in the suspension is 0.40% of the mass of polymerized monomers), 2.5 mg ethylene glycol dimethacrylate (crosslinker) and 20 mg ammonium persulfate (initiator), 10 mg N,N',N',N'-tetramethyl Diethylamine (TEMD) made.

[0047] The cellulose nanocrystals are obtained from microcrystalline cellulose through strong acid hydrolysis, dialysis and purification, and exist in the state of an aqueous suspension. The diameter of the cellulose nanocrystals in the cellulose nanocrystal suspension is 10-30 nm, and the length is 100-100 nm. 400nm, the mass concentration is 2%.

[0048] The preparation m...

Embodiment 3

[0057] A hydrogel composite with near-infrared-responsive temperature-sensitivity properties prepared from the following raw materials by weight: 2.5 g (0.013 mmol) 2-methyl-2-acrylic acid-2(2-methoxyethoxy)ethyl Esters (MOE 2 MA), 0.9g (0.003 mol) oligoethylene glycol methyl ether methyl methacrylate (Mw=300g / mol), 1.0g cellulose nanofiber suspension (the mass of cellulose nanofiber is the mass of polymerized monomer 0.88%), 9.0 g polydopamine nanoparticle suspension (the mass of PDA in the suspension is 0.40% of the mass of M polymerized monomer), 2.5 mg ethylene glycol dimethacrylate (cross-linking agent) and 20 mg persulfuric acid ammonium (initiator), 10 mg N,N',N',N'-tetramethyldiethylamine (TEMD).

[0058] The cellulose nanofibers are obtained from wood pulp after undergoing TEMPO oxidation reaction, mechanical grinding and high-pressure homogenization, and exist in the state of an aqueous suspension. The diameter of the cellulose nanofibers in the cellulose nanofiber ...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Mwcoaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of functional gel composite materials, and particularly discloses a hydrogel composite material with a near-infrared response temperature sensitive characteristic. The hydrogel composite material is mainly prepared from raw materials including polymerization monomers, polydopamine, nanometer celluloses, cross-linking agents and initiators. 2-methyl-2-acrylic acid-2(2-methoxyl ethoxy) ethyl ester and oligo-polyethylene glycol methyl ether methyl methacrylate are mixed with each other according to a molar ratio of (50-100):(0-50) to obtain the polymerization monomers. The invention further discloses a method for preparing the hydrogel composite material. The hydrogel composite material and the method have the advantages that the hydrogel composite materialprepared by the aid of the method is excellent in tenacity and mechanical strength, the temperatures can be quickly increased after near-infrared light irradiation is carried out, phase can be transformed, initial states can be quickly restored after illumination is removed, and the hydrogel composite material is excellent in repeatability; the method includes simple procedures and is easy to operate, and reaction conditions are mild.

Description

technical field [0001] The invention belongs to the field of functionalized gel composite materials, and in particular relates to a hydrogel composite material with near-infrared response and temperature-sensitive characteristics and a preparation method thereof. Background technique [0002] Hydrogel is a kind of soft material with a three-dimensional network structure containing a large amount of water obtained by physical or chemical cross-linking of polymers. Jellyfish, sea cucumbers, and human muscles in nature all belong to the category of hydrogels. Hydrogels have a wide range of applications in bionics, sensors, actuators, tissue engineering, drug sustained release and many other fields. [0003] Hydrogel materials with intelligent response properties can change the gel structure and physical state changes through external environmental stimuli such as light, heat, magnetism, and ionic strength. For example, the most common temperature-sensitive polyisopropylacrylam...

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): C08F283/00C08F251/02C08F220/28C08G73/06C08J3/075
CPCC08F251/02C08F283/00C08G73/0672C08J3/075C08J2351/02C08J2351/08C08F220/282C08F220/286
Inventor 张修强白炜董莉莉任素霞雷廷宙吴清林徐海燕李自杰
Owner ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com