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A low temperature responsive shape memory fiber and its preparation method

A technology of memory fiber and low temperature, which is applied in the fields of fiber chemical characteristics, cellulose/protein conjugated rayon, rayon manufacturing, etc. It can solve the problem of high response temperature, achieve good biocompatibility, light weight, and submit The effect of swelling and retreating

Inactive Publication Date: 2018-02-27
青岛大统纺织开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the response temperature of the currently prepared temperature-responsive textile materials is relatively high, ranging from 80-180°C, and requires the use of heating tools to respond

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Put the degummed silk in 10mol / L lithium bromide aqueous solution, dissolve it at 60°C for 2 hours, and then dialyze it for 3 days to form a silk protein aqueous solution. Pour the silk protein aqueous solution into a plastic petri dish and dry it to form a silk protein film , completely dissolving the silk protein film in methanol solvent, vacuum filtration to remove methanol, and obtain a pre-crystallized regenerated silk protein solution with a mass fraction of 8%, wherein the relative molecular mass of the regenerated silk protein is 8000.

[0027] (2) In parts by weight, add 35 parts of water-soluble sulfonic acid type polyurethane prepolymer into 80 parts of pre-crystallized regenerated silk protein aqueous solution, fully stir, then add 5 parts of N-isopropylpropylene Amide and 6 parts of guanidine compounds were heated and reacted at 60° C. for 1 hour to obtain a spinning solution.

[0028] (3) the spinning solution prepared by step (2) is 0.05mm spinneret s...

Embodiment 2

[0030] (1) Put the degummed silk in 10mol / L lithium bromide aqueous solution, dissolve it at 60°C for 3 hours, and then dialyze it for 3 days to form a silk protein aqueous solution. Pour the silk protein aqueous solution into a plastic petri dish and dry it to form a silk protein film , completely dissolving the silk protein film in methanol solvent, vacuum filtration to remove methanol, and obtain a pre-crystallized regenerated silk protein solution with a mass fraction of 15%, wherein the relative molecular mass of the regenerated silk protein is 3500.

[0031] (2) In parts by weight, add 50 parts of water-soluble carboxylic acid polyurethane prepolymer into 100 parts of pre-crystallized regenerated silk protein aqueous solution, fully stir, then add 10 parts of N-isopropylpropylene Amide and 18 parts of guanidine compounds were heated and reacted at 80° C. for 3 hours to obtain a spinning solution.

[0032] (3) The spinning solution prepared in step (2) is spun at a speed ...

Embodiment 3

[0034] (1) Put the degummed silk in 10mol / L lithium bromide aqueous solution, dissolve it at 60°C for 2.5h, and then dialyze it for 3 days to form a silk protein aqueous solution. Pour the silk protein aqueous solution into a plastic petri dish and dry it to form silk protein Membrane, completely dissolve the silk protein film in methanol solvent, remove methanol by vacuum filtration, and obtain a pre-crystallized regenerated silk protein solution with a mass fraction of 12%, wherein the relative molecular mass of the regenerated silk protein is 6000.

[0035] (2) In parts by weight, add 40 parts of water-soluble sulfonic acid type polyurethane prepolymer into 90 parts of pre-crystallized regenerated silk protein aqueous solution, fully stir, then add 8 parts of N-isopropylpropylene Amide and 12 parts of guanidine compounds were heated and reacted at 70° C. for 2 hours to obtain a spinning solution.

[0036] (3) the spinning solution prepared by step (2) is 0.05mm spinneret sp...

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PUM

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Abstract

The invention provides a preparing method of low temperature sensitive shape memory fiber. The preparing method includes the following steps that degummed silk is dissolved and dialyzed to form a silk protein water solution, after being formed by the silk protein water solution, a dry film is completely dissolved in methyl alcohol solvent, vacuum suction filtration is carried out to remove methyl alcohol to obtain modified regenerated silk protein solution, a water-soluble polyurethane prepolymer is added into the regenerated silk protein solution and stirred fully, N-isopropyl acrylamide and a guanidine compound are added, the mixed solution is heated to obtain a spinning solution, nascent fiber is obtained through wet spinning, and then low temperature sensitive shape memory fiber is obtained through steam treatment. The low temperature sensitive shape memory fiber prepared through the method is low in response temperature and high in comfort, the contact tightness between fabric and skin can be adjusted according to changes of outer environment temperature, and then skin temperature is adjusted.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a low-temperature responsive shape memory fiber and a preparation method thereof. Background technique [0002] With the continuous advancement of science and technology, smart materials have more and more applications in people's life and production. Smart material is a new type of material that can take corresponding countermeasures with changes in light, temperature, humidity and other conditions in the surrounding environment. The physical or chemical properties of the material will change reversibly. At present, there are a series of new smart materials such as pH-responsive, temperature-responsive, light-responsive, and glucose-responsive on the market. [0003] At present, most temperature-responsive materials are hydrogels and shape memory materials. Hydrogels such as poly(N-isopropylacrylamide) hydrogels will change from soft transparent to slightl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/02D01F8/16D01F1/10C08F120/54
CPCC08F120/54D01F1/10D01F8/02D01F8/16
Inventor 许利雄
Owner 青岛大统纺织开发有限公司
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