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Adsorbing material with water-induced shape memory function, and preparation method and application thereof

A technology of adsorption material and functional composite material, applied in the field of adsorption material with water-induced shape memory function and its preparation, can solve the problems of loss of shape memory function, application limitation, slow recovery rate, etc., achieve excellent shape memory function, promote Degradation, the effect of improving adsorption performance

Active Publication Date: 2017-12-08
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, many researches on shape memory polymer materials are synthesized by solvent method, and a large amount of organic solvents are used in the synthesis process. The application of materials is becoming more and more restricted, and water-soluble polymer materials have the advantages of environmental protection and energy saving, so they have received extensive attention
However, there are still some deficiencies and defects in shape memory materials, mainly: the shape recovery force is small, the small stress (<4MPa) can make it lose the shape memory function, the recovery rate is slow, and the mechanical strength and chemical durability are not ideal. , the shape recovery temperature is not accurate enough, the processing conditions are relatively strict, there is no two-way and omnidirectional memory, etc.; compared with general-purpose plastics, the cost is higher and the processing performance is poorer. At present, the difficulty of generalization has yet to be overcome.

Method used

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preparation example Construction

[0027] A kind of preparation method of the adsorption material with water-induced shape memory function of the present invention, comprises the following steps:

[0028] 1) Preparation of shape memory functional composite material matrix: 10 to 40 parts of functional polymer materials containing amino functional groups and 10 to 25 parts of water-soluble polymers containing polyhydroxyl / carboxyl / amino groups are dissolved in 10 to 1000 g of water, and at 20°C to 80°C, the stirring speed is 40 to 400r / min, blending and stirring for 0.1 to 12 hours to obtain the shape memory functional composite material matrix A;

[0029] 2) Culture of microbial base: mix 0.5-10 parts of microorganisms and 0.01-10 parts of nutrient solution, stir evenly at 20°C-50°C to obtain microbial culture medium B; microorganisms are lactic acid bacteria, Escherichia coli, butyric acid bacteria, and spores Bacillus, yeast, lactobacillus, bifidobacterium, actinomycetes, chlorella in one or more mixed bacter...

Embodiment 1

[0034] A preparation method of an adsorption material with shape memory function, comprising the steps of:

[0035] 1) Preparation of the shape memory functional composite material matrix: Dissolve 10 parts of polyethyleneimine and 10 parts of polyvinyl alcohol in 100 parts of deionized water in parts by mass; at 80°C, the stirring speed is 400r / min, Blending and stirring for 12 hours to obtain a shape memory functional composite material matrix A;

[0036] 2) Microbial base culture: mix 0.5 part of Bacillus and 0.01 part of peptone, stir evenly at 50°C to obtain microbial medium B;

[0037] 3) Preparation of porous gel matrix: lower the temperature of the matrix A obtained above to 20°C, add microbial culture medium B, stir evenly at 20°C, and pour the mixed solution into a polytetrafluoroethylene plate by casting method , placed in a microwave oven for radiation to obtain a porous gel matrix C;

[0038] 4) The porous gel matrix C was placed in a blast drying oven at 45° C. f...

Embodiment 2

[0044] A preparation method of an adsorption material with shape memory function, comprising the steps of:

[0045] 1) Preparation of the shape memory functional composite material matrix: 20 parts of polyurethane elastomer, 20 parts of polyvinylpyrrolidone, and 20 parts of cellulose were dissolved in 1000 parts of deionized water according to the mass parts; at 20 ° C, the stirring speed was 40r / min, blending and stirring for 0.1 hour to obtain the shape memory functional composite material matrix A;

[0046] 2) Culture of microbial base: 10 parts of Bacillus and 10 parts of beef extract were mixed, and stirred evenly at 20°C to obtain microbial culture medium B;

[0047] 3) Preparation of porous gel matrix: raise the temperature of matrix A obtained above to 50°C, add microbial culture medium B, stir evenly at 50°C, pour the mixed solution into a polytetrafluoroethylene plate by casting method , irradiated with ultraviolet light to obtain a porous gel matrix C;

[0048] 4)...

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Abstract

The invention discloses an adsorbing material with water-induced shape memory function, and a preparation method and an application thereof. The adsorbing material is prepared by performing physical cross-linking gelation in an aqueous solution system with a tape casting method, wherein a porous aqueous solution system is prepared from the following components in parts by weight: 10-20 parts of functional polymer material containing amino functional group, 10-20 parts of water-soluble high-molecular polymer containing polyhydroxy / carboxyl / amino, 0.5-10 parts of microorganism and 0.01-10 parts of a nutrient solution. The preparation method is simple in operation and low in cost; the raw materials are easily acquired; the prepared material has an excellent adsorbing property and can realize non-irritant quick response in deionized water at normal temperature; the material is endowed with excellent mechanical property and shape memory function; the performance shows certain recycling possibility.

Description

technical field [0001] The invention belongs to the technical field of shape-memory polymer composite materials, and in particular relates to an adsorption material with water-induced shape-memory function and its preparation method and application. Background technique [0002] Shape memory polymer material is a new type of intelligent polymer material that responds to external environmental stimuli. The material is endowed with a certain shape under certain conditions (such as the state of ultraviolet irradiation) under external influence; when the external conditions change, it can change the shape accordingly and fix it. If the external environment changes again in a specific way, they can reversibly return to the initial state, thus completing the cycle of "remembering the initial state→fixing the deformed state→recovering the initial state". This property of polymers is called memory. effect. After being deformed, shape memory polymer materials can be restored to the...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/26B01J20/24C02F1/28C12N1/20C12N1/16C12N1/12C12R1/01C12R1/19C12R1/145C12R1/07C12R1/225C12R1/04C12R1/89C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J20/24B01J20/261B01J20/264B01J20/28011B01J20/28047B01J2220/445B01J2220/4868C02F1/285C02F1/286C02F2101/308C02F2101/34C02F2101/36C02F2101/38C02F2101/40C12N1/12C12N1/16C12N1/20
Inventor 张敏黄学芳李成涛
Owner SHAANXI UNIV OF SCI & TECH
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