High-strength photonic crystal hydrogel, preparation method and application thereof

A photonic crystal and hydrogel technology, which is applied in the field of high-strength photonic crystal hydrogel and its preparation, can solve the problems of weak interface strengthening force and insufficient mechanical properties of photonic crystal hydrogel, and achieve good mechanical properties and excellent The effect of high optical characteristics and high sensitivity

Active Publication Date: 2019-07-23
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects and technical deficiencies in the prior art, such as insufficient mechanical properties of photonic crystal hydrogel, weak interface enhancement force, contradiction between spectral response sensitivity and reflection peak intensity, etc., and provides a Preparation method of high-intensity photonic crystal hydrogel

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  • High-strength photonic crystal hydrogel, preparation method and application thereof
  • High-strength photonic crystal hydrogel, preparation method and application thereof
  • High-strength photonic crystal hydrogel, preparation method and application thereof

Examples

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Embodiment 1

[0047] A preparation method of high-strength photonic crystal hydrogel, comprising the steps of:

[0048] S1. Weigh 0.015 parts of sodium lauryl sulfate and add it to 85 parts of water and stir to dissolve it. After heating to 60°C, add 10 parts of butyl acrylate and 0.7 parts of methacrylic acid in sequence, and continue heating and stirring; wait until the system is heated to 80°C 1.15 parts of ammonium persulfate aqueous solution with a mass concentration of 13% was slowly added dropwise to the system, and kept at 80°C for uniform stirring and reaction for 12 hours to obtain a polymer colloidal crystal emulsion;

[0049] S2. Add 0.025 parts of sodium lauryl sulfate to the mixed solution of 8.8 parts of the emulsion prepared in step S1 and 1.2 parts of absolute ethanol and stir to dissolve. After heating to 40°C, add 0.7 parts of isooctyl acrylate and keep stirring evenly at 40°C 12 hours; then the obtained solution was dialyzed in deionized water for 3 days to remove organi...

Embodiment 2

[0052] A preparation method of high-strength photonic crystal hydrogel, comprising the steps of:

[0053] S1. Weigh 0.013 parts of sodium lauryl sulfate and add it to 85 parts of water and stir to dissolve it. After heating to 60°C, add 10 parts of butyl acrylate and 0.7 parts of methacrylic acid in turn, and continue heating and stirring; when the system is heated to 80°C 1.15 parts of ammonium persulfate aqueous solution with a mass concentration of 13% was slowly added dropwise to the system, and kept at 80°C for uniform stirring and reaction for 12 hours to obtain a polymer colloidal crystal emulsion;

[0054] S2. Add 0.03 parts of sodium lauryl sulfate to the mixed solution of 8.8 parts of the emulsion prepared in step S1 and 1.2 parts of absolute ethanol, stir and dissolve, add 0.7 parts of isooctyl acrylate after heating to 40°C, and keep stirring evenly at 40°C 12 hours; then the obtained solution was dialyzed in deionized water for 3 days to remove organic solvents an...

Embodiment 3

[0057] A preparation method of high-strength photonic crystal hydrogel, comprising the steps of:

[0058] S1. Weigh 0.015 parts of sodium lauryl sulfate and add it to 85 parts of water and stir to dissolve it. After heating to 60°C, add 10 parts of butyl acrylate and 0.5 parts of methacrylic acid in turn, and continue heating and stirring; when the system is heated to 80°C 1.15 parts of ammonium persulfate aqueous solution with a mass concentration of 13% was slowly added dropwise to the system, and kept at 80°C for uniform stirring and reaction for 12 hours to obtain a polymer colloidal crystal emulsion;

[0059] S2. Add 0.03 parts of sodium lauryl sulfate to the mixed solution of 8.8 parts of the emulsion prepared in step S1 and 1.2 parts of absolute ethanol, stir and dissolve, add 0.7 parts of isooctyl acrylate after heating to 40°C, and keep stirring evenly at 40°C 12 hours; then the obtained solution was dialyzed in deionized water for 3 days to remove organic solvents an...

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Abstract

The invention discloses a high-strength photonic crystal hydrogel, a preparation method and an application thereof. The preparation method of the high-strength photonic crystal hydrogel comprises thefollowing steps: adopting an emulsion polymerization method for compounding a polymer colloidal crystal microsphere; swelling an oil-soluble monomer in the microsphere, thereby acquiring a colloidal crystal emulsion containing dissolved unpolymerized oil-soluble monomer; adding a water-soluble monomer acrylamide for polymerizing, thereby acquiring the high-strength photonic crystal hydrogel. According to the preparation method, the oil-soluble monomer in the microsphere participates into the polymerization of the water-soluble monomer acrylamide so as to form an oil and water bi-phase penetrated polymer netted structure in a hydrogel polymerization process, so that a higher interaction force of microsphere and bottom hydrogel can be acquired and excellent mechanical properties of high tensile and high strength can be realized. The high-strength photonic crystal hydrogel prepared according to the invention has an optical characteristic of force-induced color change, is wide in spectralresponse range, is high in sensitivity and can be applied to the fields of micro-mechanical sensors, structural color regulation, patterning and optical encrypting anti-fake.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-strength photonic crystal hydrogel and its preparation method and application. Background technique [0002] Photonic crystals are a class of microstructured materials whose dielectric constant varies periodically with space. Due to Bragg's diffraction law, when light travels into a periodically arranged dielectric material, the light wave is modulated to form a photonic band structure, and the light falling in the photonic band gap cannot be transmitted, but is reflected back. [0003] Hydrogel materials are widely used in sensing, tissue engineering, etc. due to their unique softness and water retention function. At present, high-strength hydrogels with excellent mechanical properties prepared by different preparation methods include double-network hydrogels, nanocomposite hydrogels, ionically cross-linked hydrogels, and macromolecular microsphere composite hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F220/18C08F220/56
CPCC08F265/06C08F220/1804
Inventor 陈嘉瑶洪炜陈旭东
Owner SUN YAT SEN UNIV
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