Preparation method of silk fibroin energy storage and temperature regulation fiber membrane

A technology of silk fibroin and temperature-adjusting fiber, which is applied in fiber processing, filament/thread forming, textile and papermaking, etc., can solve the problems of low energy storage efficiency and strength reduction, achieve low cost and prevent local temperature from being too high , to avoid the effect of reducing the mechanical strength

Inactive Publication Date: 2016-02-03
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing silk fibroin energy storage and temperature regulation fiber membrane to solve the problems of reduced strength and low energy storage efficiency in the energy storage temperature regulation fiber produced by the existing microcapsule composite spinning technology
[0006] The concept of the present invention is: aiming at the disadvantages of reduced strength and low energy storage efficiency in the energy storage temperature-regulating fiber prepared by the current microcapsule composite spinning technology, select a wall material material with excellent microcapsule encapsulation performance, and at the same time use it as a microcapsule wall material. Materials and fiber substrates, composite fibers are obtained through microcapsule composite spinning technology, and the interface bonding strength of the two phases is improved to increase fiber strength and energy storage density

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) The silkworm cocoons were boiled in 0.5wt% Na 2 CO 3 Boil the aqueous solution on low heat for 30 minutes, repeat once, and wash to obtain silk fibroin; dissolve the obtained silk fibroin in 9Mol / L LiBr aqueous solution at 40°C for 2 hours to obtain a regenerated silk fibroin aqueous solution; The aqueous protein solution was dialyzed in deionized water for 3 days and then concentrated to obtain a regenerated silk fibroin aqueous solution A with a mass concentration of 3.3 wt% and a regenerated silk fibroin aqueous solution B with a mass concentration of 10.2 wt%.

[0025] (2) Weigh 0.83g of span-80, 0.05g of n-dodecyl alcohol and 0.18g of sodium lauryl sulfate and add them to 200g of regenerated silk fibroin aqueous solution A, stir evenly; in a water bath environment at 40°C, add 6.5g of molten phase-change paraffin, and emulsified at a stirring speed of 1000rpm for 30min, and continued to drop 0.18g sodium lauryl sulfate during the emulsification process; then m...

Embodiment 2

[0028] (1) Prepare a regenerated silk fibroin aqueous solution A with a mass concentration of 3.2 wt% and a regenerated silk fibroin aqueous solution B with a mass concentration of 10.1 wt%.

[0029] (2) Weigh 0.83g of span-80, 0.05g of n-dodecyl alcohol and 0.18g of sodium lauryl sulfate into 200g of regenerated silk fibroin aqueous solution A, stir well; phase-change paraffin, and emulsified at a homogeneous speed of 5000rpm for 30min, and continued to drop 0.18g of sodium lauryl sulfate during the emulsification process; then measured 30ml of ethanol and added it to the prepared emulsion, and stirred at a speed of 300rpm for 3min ; Then place the obtained solution at -25°C for 24 hours, and obtain a microcapsule suspension after thawing; after concentrating the above suspension to 120g, add it to 60g of regenerated silk fibroin aqueous solution B, stir evenly, and continue to concentrate to a concentration of up to 34.7wt%, and the spinning solution was obtained.

[0030] ...

Embodiment 3

[0032] (1) Prepare a regenerated silk fibroin aqueous solution A with a mass concentration of 3.1 wt% and a regenerated silk fibroin aqueous solution B with a mass concentration of 10.5 wt%.

[0033] (2) Weigh 1.1gspan-80, 0.1g n-dodecyl alcohol and 0.36g sodium lauryl sulfate and add it to 200g regenerated silk fibroin aqueous solution A, stir evenly; n-octadecane, and emulsified at a homogeneous speed of 12000rpm for 10min, and continued to drop 0.36g of sodium lauryl sulfate during the emulsification process; then measured 30ml of ethanol and added it to the prepared emulsion, and stirred at a speed of 300rpm 3min; then, place the obtained solution at -25°C for 24 hours, and thaw to obtain a microcapsule suspension; after concentrating the above suspension to 120g, add it to 60g of regenerated silk fibroin aqueous solution B, stir evenly, and continue to concentrate When the concentration reaches 33.5wt%, the spinning solution is obtained.

[0034] (3) Transfer the spinnin...

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Abstract

A preparation method of a silk fibroin energy storage and temperature regulation fiber membrane includes the following steps of preparing a regeneration silk fibroin aqueous solution with the concentration of 2-6 wt% and a regeneration silk fibroin aqueous solution with the concentration of 10-20 wt%; weighing organic phase-change materials, wherein the mass ratio of the organic phase-change materials to regeneration silk fibroin is between 1 to 1.2 and 2 to 1; adding the solution A to the melted materials to conduct emulsification for 10-30 min to obtain emulsion; measuring ethyl alcohol, wherein the volume ratio of ethyl alcohol to the solution A is between 3 to 20 and 7 to 20; adding emulsion, conducting stirring, and inducing silk fibroin to generate conformation conversion; conducting unfreezing after conducting freezing, and obtaining suspension liquid with phase-change energy storage microcapsules as the suspension phase and with water as the dispersion phase; adding suspension liquid to the solution B to be evenly stirred, conducting concentration till the concentration is 25-35 wt%, injecting the mixture into an electrostatic spinning device for electrostatic spinning, and obtaining the silk fibroin energy storage and temperature regulation fiber membrane. The method solves the problems that energy storage and temperature regulation fiber manufactured in the prior art is low in strength and energy storage efficiency.

Description

technical field [0001] The invention belongs to the field of energy storage and temperature regulation fibers, in particular to a preparation method of a biodegradable and biocompatible regenerated silk fibroin energy storage and temperature regulation nanofiber membrane. Background technique [0002] Energy-storage temperature-regulating fiber is a composite of phase-change energy-storage material and fiber to obtain an intelligent fiber that can automatically adjust temperature. The phase change material contained in it uses the heat absorption and release generated during the phase change process to respond to changes in the ambient temperature, so as to achieve the balance and adjustment of the fiber to the local microenvironmental temperature. Therefore, as a new type of material, energy storage and temperature-regulating fibers not only have broad application prospects in the fields of clothing fabrics, construction, and aerospace, but also gradually occupy a place in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/04D01D5/00
Inventor 罗杰宋国林唐国翌赵亮杨艳阳刘源陈丽杰
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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