Cationic-emulsion-particle-toughened hydrophobic association hydrogel and preparing method

A technology of cationic emulsion and hydrophobic association, applied in the field of cationic emulsion particle toughening hydrophobic association hydrogel and preparation method, can solve the problem of hydrogel toughening and the like, and achieve the effect of strength improvement

Inactive Publication Date: 2017-03-15
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the toughening problem of hydrogel, the invention provides a kind of cationic emulsion particle toughened hydrophobic association hydrogel and its preparation method

Method used

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  • Cationic-emulsion-particle-toughened hydrophobic association hydrogel and preparing method
  • Cationic-emulsion-particle-toughened hydrophobic association hydrogel and preparing method
  • Cationic-emulsion-particle-toughened hydrophobic association hydrogel and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 A hydrophobic association hydrogel toughened by cationic emulsion particles, the composition and weight ratio are as follows: cationic emulsion particles: hydrophobic monomer: emulsifier: main monomer: deionized water: 0.6:0.5:3: 40:100;

[0030] Described cationic emulsion particle is prepared by following (1) method for preparing cationic emulsion particle;

[0031] Described hydrophobic monomer is hexadecyl methacrylate;

[0032] Described emulsifying agent is cetyl trimethyl ammonium chloride;

[0033] The main monomer is acrylamide.

[0034] A cationic emulsion particle toughened hydrophobic association hydrogel and the steps and conditions of the preparation method are as follows:

[0035] (1) Preparation of cationic emulsion particles

[0036] (a) Styrene was removed polymerization inhibitor with 5wt% sodium hydroxide solution, then washed to neutrality with deionized water, after drying with anhydrous magnesium sulfate, carry out vacuum distillatio...

Embodiment 2

[0058] Example 2 A cationic emulsion particle toughened hydrophobic association hydrogel, the composition and weight ratio are as follows: cationic emulsion particle: hydrophobic monomer: emulsifier: main monomer: deionized water: 0.4:0.6:3: 40:100;

[0059] Described cationic emulsion particle is prepared by following (1) method for preparing cationic emulsion particle;

[0060] Described hydrophobic monomer is hexadecyl methacrylate;

[0061] Described emulsifying agent is cetyl trimethyl ammonium chloride;

[0062] The main monomer is acrylamide.

[0063] A cationic emulsion particle toughened hydrophobic association hydrogel and the steps and conditions of the preparation method are as follows:

[0064] (1) Preparation of cationic emulsion particles

[0065] (a) with embodiment 1;

[0066] (b) According to the weight ratio of deionized water, styrene, cationic monomer p-vinylbenzyltrimethylammonium chloride, and cationic initiator azobisisobutylimidium hydrochloride i...

Embodiment 3

[0078] Example 3 A cationic emulsion particle toughened hydrophobic association hydrogel, the composition and weight ratio are as follows: cationic emulsion particle: hydrophobic monomer: emulsifier: main monomer: deionized water: 0.4:1:3: 40:100;

[0079] Described cationic emulsion particle is prepared by following (1) method for preparing cationic emulsion particle;

[0080] Described hydrophobic monomer is lauryl methacrylate;

[0081] Described emulsifier is cetyltrimethylammonium bromide;

[0082] The main monomer is acrylamide.

[0083] A cationic emulsion particle toughened hydrophobic association hydrogel and the steps and conditions of the preparation method are as follows:

[0084] (1) Preparation of cationic emulsion particles

[0085] (a) with embodiment 1;

[0086] (b) According to the weight ratio of deionized water, styrene, cationic monomer dimethyl diallyl ammonium chloride, and cationic initiator azobisisobutylimidazoline hydrochloride is 100:18:0.3: 0...

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Abstract

The invention discloses a cationic-emulsion-particle-toughened hydrophobic association hydrogel. The cationic-emulsion-particle-toughened hydrophobic association hydrogel is prepared from cationic emulsion particles, a hydrophobic monomer, an emulsifying agent, main monomers and deionized water, wherein the weight ratio of the cationic emulsion particles to the hydrophobic monomer to the emulsifying agent to the main monomers and to the deionized water is (0.1-1.0):(0.5-1.0):3:40:100. The cationic emulsion particles are copolymerized from styrene and cationic monomers, an initiating agent is decomposed, cationic free radicals and cationic monomer chain sections are generated, and the good hydrophilia is distributed on the surfaces of microspheres; the deionized water, the main monomer, the emulsifying agent, the initiating agent, the hydrophobic monomer and the cationic emulsion particles are mixed to be even and injected into a mold and heated, and the hydrogel is obtained. The hydrophobic monomer are stabilized on the particle surfaces by a surfactant through the cationic emulsion particles to form a hydrophobic association center, anion free radicals are adsorbed through electric charges, and a hydrogel network is formed in a triggered-polymerized mode. The cationic emulsion particles have the hydrophobic association physical cross-linking and ionic cross-linking agent effects in the hydrogel, the hydrogel is reinforced, and the mechanical performance of the hydrogel is obviously improved. The breaking elongation rate is 1,780%, and the tensile strength is 1.37 MPa.

Description

technical field [0001] The invention belongs to the technical field of hydrogel synthesis and toughening, and in particular relates to a hydrophobic association hydrogel toughened by cationic emulsion particles and a preparation method. Background technique [0002] Hydrogel is a three-dimensional polymer network composed of hydrophilic polymers, which can absorb a large amount of water, and is soft and elastic after absorbing water. This feature has many similarities with biological soft tissue and has good biocompatibility. This unique structure and performance make it have broad application prospects in life science, food science, selective adsorption, drug controlled release, biosensor and tissue engineering. However, hydrogels formed by common chemical crosslinking usually have disadvantages such as low gel strength and poor toughness, which cannot meet the requirements of use, which severely limits the scope of their applications. Therefore, the development of high-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/34C08F220/56C08F220/18C08F212/14C08F226/02C08L33/26C08L25/14C08L25/08C08J3/075
CPCC08F212/08C08F220/56C08J3/075C08J2333/26C08J2425/08C08J2425/14C08L33/26C08F220/34C08F212/14C08F226/02C08L25/14C08L25/08C08F220/1818
Inventor 高光辉古宋任秀艳李思良
Owner CHANGCHUN UNIV OF TECH
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