Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of core-shell particle enhanced hydrophobic association hydrogel

A hydrophobic association and hydrogel technology, applied in the field of hydrogel, to achieve the effect of broadening the application field, strong hydrophobic association ability, and large specific surface area

Inactive Publication Date: 2017-11-03
CHANGCHUN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the use of core-shell particles to enhance hydrophobic association hydrogels

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
  • A kind of preparation method of core-shell particle enhanced hydrophobic association hydrogel
  • A kind of preparation method of core-shell particle enhanced hydrophobic association hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation method of a core-shell particle enhanced hydrophobic association hydrogel

[0021] [1] Preparation of core-shell particles

[0022] a. Preparation of nuclei

[0023] 1) Mix water, comonomer 1, emulsifier, initiator 1, crosslinking agent, molecular weight regulator and pH buffer in a mass ratio of 100:68:3:0.05:0.2:0.01:0.1, and mix them evenly. Obtain the first pre-emulsion; Described comonomer 1 is methyl methacrylate, and emulsifier is sodium dodecyl sulfonate; Initiator 1 is potassium persulfate; Cross-linking agent is dicyclopentenyl acrylate ; Molecular weight regulator is tertiary dodecyl mercaptan; pH value buffering agent is sodium bicarbonate;

[0024] 2) Stir the first pre-emulsion at 50°C, and pass nitrogen gas into it. After the air in the system is evacuated, raise the temperature to 70°C, and react for 4 hours. After the polymerization reaction is completed, nano-sized nuclei are obtained. Structured emulsion, and the above emulsio...

Embodiment 2

[0044] Example 2 Preparation method of a core-shell particle enhanced hydrophobic association hydrogel

[0045] [1] Preparation of core-shell particles

[0046] a. Preparation of nuclei

[0047] 1) Mix water, comonomer 1, emulsifier, initiator 1, crosslinking agent, molecular weight regulator and pH value buffer in a mass ratio of 100:68:4:0.1:0.4:0.03:0.3, and mix them evenly, Obtain the first pre-emulsion; Described comonomer 1 is methyl methacrylate, and emulsifier is sodium dodecyl sulfonate; Initiator 1 is potassium persulfate; Cross-linking agent is dicyclopentenyl acrylate ; Molecular weight regulator is tertiary dodecyl mercaptan; pH value buffering agent is sodium bicarbonate;

[0048] 2) Stir the first pre-emulsion at 55°C, and pass nitrogen gas into it. After the air in the system is emptied, raise the temperature to 75°C, and react for 3 hours. After the polymerization reaction is completed, a nano-sized nucleus is obtained. Structured emulsion, and the above em...

Embodiment 3

[0059] Example 3 Preparation method of a core-shell particle enhanced hydrophobic association hydrogel

[0060] [1] Preparation of core-shell particles

[0061] a. Preparation of nuclei

[0062] 1) Mix water, comonomer 1, emulsifier, initiator 1, cross-linking agent, molecular weight regulator and pH buffer in a mass ratio of 100:68:5:0.15:0.6:0.05:0.5, and mix them evenly. Obtain the first pre-emulsion; Described comonomer 1 is methyl methacrylate, and emulsifier is sodium dodecyl sulfonate; Initiator 1 is potassium persulfate; Cross-linking agent is dicyclopentenyl acrylate ; Molecular weight regulator is tertiary dodecyl mercaptan; pH value buffering agent is sodium bicarbonate;

[0063] 2) Stir the first pre-emulsion at 65°C, and pass nitrogen gas into it. After the air in the system is evacuated, raise the temperature to 85°C, and react for 2 hours. After the polymerization reaction is completed, nano-sized nuclei are obtained. Structured emulsion, and the above-mentio...

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of core-shell particle reinforced hydrophobically associating hydrogel, comprising: preparing core-shell particles and preparing core-shell particle reinforced hydrogel. The prepared core-shell particle reinforced hydrophobically associating hydrogel is different from existing hydrophobically associating hydrogel and macromolecular microsphere hydrogel. A core of each core-shell particle is methyl methacrylate copolymer, and a shell thereof is butyl acrylate copolymer; as the surface of the core-shell particles is highly hydrophobic, the core-shell particles can be in hydrophobic associative physical crosslinking with hydrophobic monomers in the hydrogel; the core-shell particles have hard inside and soft outside and can significantly reinforce the hydrogel, so that the strength of the core-shell particle crosslinked hydrogel is significantly improved. The prepared core-shell particle reinforced hydrophobically associating hydrogel is 1.78-1.81 Mpa in tensile strength average and 2180-2320% in elongation average. The key technical problem in hydrogel reinforcement is solved, and the applicable field of the hydrogel is widened.

Description

technical field [0001] The invention belongs to the technical field of hydrogels, and relates to a preparation method of core-shell particle-enhanced hydrophobic association hydrogels. Background technique [0002] Hydrogel is a polymer material with a three-dimensional network cross-linked structure formed by hydrophilic macromolecules. Since most of the hydrogels are composed of hydrophilic macromolecules, hydrogels can absorb a large amount of water. Due to their good softness and biocompatibility, hydrogels are widely used in food, cosmetics, sewage treatment, tissue engineering, and drug sustained-release agents. However, most hydrogels are limited in some application fields that require high toughness and high strength hydrogels due to their poor mechanical properties, such as tendon and cartilage. Improving the mechanical properties of hydrogels has aroused the interest of many scholars at home and abroad, and has successively realized macromolecular topological hyd...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/26C08L51/00C08F265/06C08F220/18C08F220/14C08F220/56C08F2/26C08J3/075
CPCC08F2/26C08F220/56C08F265/06C08J3/075C08J2333/26C08J2451/00C08L33/26C08L51/003C08F220/1818C08F220/1804
Inventor 高光辉刘佰军任秀艳
Owner CHANGCHUN UNIV OF TECH