Intelligently varying particles and preparation method thereof

A particle and intelligent technology, applied in the field of intelligently changing particles and its preparation, can solve the problems of small particle volume changes and only have theoretical research value, and achieve the effect of easy control of the process

Active Publication Date: 2018-05-15
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The introduction of inorganic substances (gold, silver, ferric oxide, etc.) into these smart particles has also been reported, and some inorganic hybrid responsive materials also show slight volume shrinkage under light (J.Yoon et al. Angew.Chem. 2012, 124, 7258), but the principle is mostly attributed to the shrinkage of poly(N-isopropylacrylamide) polymer after the inorganic particles are heated by light, resulting in a small change in the volume of the particles, and most of them only have theoretical research value

Method used

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  • Intelligently varying particles and preparation method thereof
  • Intelligently varying particles and preparation method thereof
  • Intelligently varying particles and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0041] A kind of preparation method of above-mentioned smart particle, its specific process is as follows:

[0042] 1) The above-mentioned responsive polymer particles synthesized by any method are dispersed in a solvent; a certain amount of metal salt solution or a mixed solution of two or more metal salts or a soluble metal compound solution is added in proportion; the particles are separated after a certain period of time to obtain a smart change particles;

[0043] 2) The above-mentioned responsive polymer particles synthesized by any method are dispersed in a solvent; a certain amount of metal salt solution or soluble metal compound solution, or a mixed solution of two or more metal salts is added in proportion; agent solution, after fully reacting, the particles are separated and washed to obtain intelligently changed particles.

[0044] The above-mentioned solvent is water, ethanol, propanol, butanol, isopropanol, tetrahydrofuran, N,N-dimethylformamide or a mixed solut...

Embodiment 1

[0048] Embodiment 1, the preparation of sodium molybdate / poly(N-isopropylacrylamide) particles

[0049] Add 20mL 0.1g poly(N-isopropylacrylamide) particles in a 50mL flask, add 1M sodium molybdate solution 5ml, after stirring for 30min, centrifuge to obtain smart particles loaded with sodium molybdate.

experiment example 2

[0050] Experimental example 2. Preparation of tungsten oxide / poly(N-isopropylacrylamide) smart particles

[0051] Add 10g of poly(N-isopropylacrylamide) to a 250mL flask, add 150mL of water, add 10g of potassium tungstate after fully dispersing, stir for 10 minutes, add 10mL of 10M hydrochloric acid, react for 1 hour, centrifuge, water fully Washing gives smart particles.

[0052] figure 1 The particle size distribution diagram of the prepared tungsten oxide / poly(N-isopropylacrylamide) smart particles as a function of temperature.

[0053] Depend on figure 1 It can be seen that the particles gradually become smaller at high temperature.

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Abstract

The invention discloses intelligent particles with a multi-varying function and a preparation method of the intelligent particles. The particles comprise two parts: substrate polymer particles and aninorganic component. Varying of the particles has a response to temperature, the pH value and light. The preparation method of the particles comprises the following steps: adding the responsive polymer particles into a solvent, adding an inorganic precursor, and then adding a catalyst to enable the inorganic matter to be deposited in the particles. The particles provided by the invention can be applied to intelligent surfaces, intelligent fiber or costumes, catalytic reaction and the like, and has a wide application prospect in various fields of catalysis, materials, organic chemistry and thelike. The preparation method is simple, convenient, easy to control, universality and suitable for large-batch production and application.

Description

technical field [0001] The present invention relates to an intelligently changing particle and a preparation method thereof, in particular to a two-component hybrid particle containing a responsive polymer and an inorganic component and a preparation method thereof. Background technique [0002] In the field of material chemistry, the development of smart materials has aroused widespread interest, among which chemical substances with environmental responsiveness have been widely concerned, which can change their shape, structure or properties with changes in specific factors in the environment, such as poly( N-isopropylacrylamide) has temperature responsiveness. When the temperature is lower than the critical value (about 32°C) in aqueous solution, it is an extended chain configuration, showing hydrophilicity. When the temperature is higher than the critical value , the chain shrinks and aggregates, showing lipophilicity (Y. Hirokawa et al. Chemical Physics 1984, 81(12), 637...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/24C08K3/22C08L33/14C08L33/24D06M15/285D06M11/48D06M101/32
CPCC08K3/22C08K3/24C08K2003/2255C08K2003/2258D06M11/48D06M15/285D06M2101/32C08L33/14C08L33/24
Inventor 刘继广陆雅妙
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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