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Polydiacetylene-based thermotropic reversible color-change composite material and preparation method thereof

A composite material, diacetylene technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, etc., can solve the problem that the color cannot be restored from red to blue state, affecting the reusability of polydiacetylene sensors, etc. control effect

Active Publication Date: 2018-08-31
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polydiacetylene exhibits only an irreversible color change when the environment changes, that is, its color cannot return from red to blue state when the external stimulus is removed
This irreversible discoloration behavior affects the reusability of polydiacetylene sensors

Method used

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  • Polydiacetylene-based thermotropic reversible color-change composite material and preparation method thereof
  • Polydiacetylene-based thermotropic reversible color-change composite material and preparation method thereof
  • Polydiacetylene-based thermotropic reversible color-change composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1. Preparation of polydiacetylene / hydroxyaluminum oxide composite material

[0022] (1) Preparation of hydroxylated aluminum oxide: Weigh 3 g of aluminum oxide and add it to 30 ml of H 2 O 2 / H 2 O mixed solution (H 2 O 2 :H 2 O=1:2~1:3v / v), add sodium silicate to adjust the pH of the solution to 10, react at 50 °C for 5~7 h, filter, and wash the solid with deionized water several times until the eluate is medium After drying in vacuum, hydroxylated aluminum oxide is obtained; the infrared spectra of hydroxylated aluminum oxide and unhydroxylated aluminum oxide are shown in figure 1 .

[0023] (2) Preparation of polydiacetylene / hydroxylated aluminum oxide composite material: Weigh 12 g of 10,12-pentacosadiynoic acid monomer, add it to 1 mL of dimethyl sulfoxide and stir to fully dissolve it Then add 9 mL of deionized water, ultrasonically disperse for 10 min, add to the deionized aqueous solution of 3 mg of hydroxylated aluminum oxide above, mix and ultr...

Embodiment 2

[0025] Example 2. Preparation of polydiacetylene / hydroxylated titanium dioxide composite material

[0026] (1) Preparation of hydroxylated aluminum oxide: Weigh 3 g of titanium dioxide particles and add them to 30 ml of H 2 O 2 / H 2 O mixed solution (H 2 O 2 :H 2 O=1:2~1:3v / v), add sodium silicate to adjust the pH of the solution to 10, react at 50 °C for 5~7 h, filter, and wash the solid with deionized water several times until the eluate is medium After drying in vacuum, hydroxylated titanium dioxide is obtained; the infrared spectra of hydroxylated titanium dioxide and unhydroxylated titanium dioxide are shown in figure 1 .

[0027] (2) Preparation of polydiacetylene / hydroxylated titanium dioxide composite material: Weigh 12 g of 10,12-pentacosadiynoic acid monomer, add it to 1 mL of dimethyl sulfoxide and stir to fully dissolve it, and then add 9 mL of deionized water, ultrasonically dispersed for 10 min, added to the deionized aqueous solution of the above 3 mg of...

Embodiment 3

[0029] Example 3. Preparation of polydiacetylene / hydroxylated silica composite material

[0030] (1) Preparation of hydroxylated silica: Weigh 3 g of silica particles and add them to 30 ml of H 2 O 2 / H 2 O mixed solution (H 2 O 2 :H 2 O=1:2~1:3v / v), add sodium silicate to adjust the pH of the solution to 10, react at 50 °C for 5~7 h, filter, and wash the solid with deionized water several times until the eluate is medium After drying in vacuum, hydroxylated silica is obtained; the infrared spectra of hydroxylated and unhydroxylated silica are shown in figure 1 .

[0031] (2) Preparation of polydiacetylene / hydroxylated silica composite material: Weigh 12g of 10,12-pentacosadiynoic acid monomer, add it to 1 mL of dimethyl sulfoxide, stir to fully dissolve it, and then add 9 mL deionized water, ultrasonically dispersed for 10 min, added to the deionized aqueous solution of 3 mg of hydroxylated silica above, mixed and then ultrasonically shaken at 75-80 °C for 50 min, (th...

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Abstract

The invention discloses a polydiacetylene-based thermotropic reversible color-change composite material which is prepared by the following steps: sufficiently dissolving a 10,12-pentdiacetylenic acidmonomer into a dimethyl sulfoxide-water mixed solution, further adding a surface hydroxylation inorganic oxide, performing ultrasonic treatment for 50-60 minutes on the mixed solution at 70-80 DEG C,cooling to 0-5 DEG C, leaving to stand to carry out self-assembled incubation so as to obtain a colorless supermolecule solution, and polymerizing the colorless supermolecule solution under radiationof ultraviolet rays, thereby obtaining a polydiacetylene / hydroxylation oxide blue solution. According to the material, surface polyhydric inorganic particles are prepared and reacted with hydrogen bonds of -COOH at a diacetylene acid molecule end group, and after self-assembling and ultraviolet ray radiation polymerization, a universal thermotropic reversible color-change composite material of a polydiacetylene / hydroxylation inorganic matter system can be prepared. Since different polydiacetylene / hydroxylation inorganic matter composite materials have different thermotropic color-change temperatures, temperature controllability of a reversible color-change sensor can be achieved.

Description

technical field [0001] The invention relates to a thermochromic intelligent material, in particular to a preparation method of a polydiacetylene-based thermoreversible discoloration composite material, belonging to the field of composite materials and the field of smart materials. Background technique [0002] Materials are the backbone of human life and production, and are mainly divided into functional materials and structural materials. Functional materials focus on their special functions, while structural materials focus on their mechanical strength. Smart materials are the combination of functional materials and structural materials to ultimately achieve functional intelligence and structural intelligence. It can obtain the changes of the external environment through its own perception, make timely judgments and processing according to the changes, and issue instructions, adjust its own status and behavior to adapt to changes in the external environment, and then real...

Claims

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Application Information

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IPC IPC(8): C08F138/00C08F2/44C08F2/48C08K9/02C08K3/22C09K9/02
CPCC08F2/44C08F2/48C08F138/00C08K3/22C08K3/36C08K9/02C08K2003/2227C08K2003/2241C09K9/02
Inventor 常玥张亚娜王俊林李小妹李梦佳
Owner NORTHWEST NORMAL UNIVERSITY
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