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A biomedical energy storage temperature-regulating fiber membrane and its preparation method

A temperature-adjusting fiber and biomedical technology, which is applied in fiber processing, textiles, papermaking, non-woven fabrics, etc., can solve the problems of phase change material loss, cumbersome processing technology, and poor fiber fibrillation, and achieve good energy storage. The effect of simple method and low cost

Inactive Publication Date: 2017-11-14
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the preparation method of the above-mentioned polyethylene glycol energy storage temperature-regulating fiber, there are still shortcomings such as easy loss of phase change materials, poor fiber-forming properties of fibers, poor energy storage properties of fibers, and cumbersome processing technology. Therefore, to explore On the premise of not destroying the fibrillation and energy storage properties of fibers, obtaining high-performance polyethylene glycol energy storage and temperature-regulating fiber membranes is still a topic of concern for researchers.

Method used

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  • A biomedical energy storage temperature-regulating fiber membrane and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Accurately weigh 1g of polyethylene glycol with a weight average molecular weight of 1000, add it to 20g of regenerated silk fibroin aqueous solution with a concentration of 20wt%, stir magnetically at room temperature for 15min to obtain a transparent mixed solution, and then concentrate it to a concentration of 33.5wt % spinning solution.

[0025] (2) Transfer the obtained spinning solution to a syringe, use aluminum foil as a receiving device, and carry out electrospinning in a normal temperature environment. The electrospinning conditions are as follows: the voltage is 23kV, the advancement rate of the syringe pump is 0.6ml / h, and the receiving distance is 16cm, obtained regenerated silk fibroin / polyethylene glycol energy storage and temperature regulation composite nanofiber membrane. refer to figure 1 , the average nanofiber diameter is 150±44.12nm, and the phase transition temperature is 38.5 o C, the heat storage enthalpy value is 21J / g.

Embodiment 2

[0027] (1) Weigh 2g of polyethylene glycol with a weight average molecular weight of 2000, add it to 20g of regenerated silk fibroin aqueous solution with a concentration of 20wt%, stir magnetically at room temperature for 15min to obtain a transparent mixed solution, and then concentrate it to a concentration of 32.3wt%. silk liquid.

[0028](2) Transfer the obtained spinning solution into a syringe, use aluminum foil as a receiving device, and carry out electrospinning in a normal temperature environment. The electrospinning conditions are as follows: the voltage is 25kV, the advancement rate of the syringe pump is 0.7ml / h, and the receiving distance is 12cm, regenerated silk fibroin / polyethylene glycol energy storage and temperature-regulating composite nanofiber membrane, the average diameter of nanofibers is 220±74.46nm, and the phase transition temperature is 52.5 o C, the heat storage enthalpy value is 48J / g.

Embodiment 3

[0030] (1) Accurately weigh 3g of polyethylene glycol with a weight average molecular weight of 800, add it to 20g of regenerated silk fibroin aqueous solution with a concentration of 20wt%, stir magnetically at room temperature for 15min to obtain a transparent mixture, and concentrate it to a concentration of 35.4wt% spinning solution.

[0031] (2) Transfer the obtained spinning solution into a syringe, use aluminum foil as a receiving device, and carry out electrospinning in a room temperature environment. The electrospinning conditions are as follows: the voltage is 19kV, the advancement rate of the syringe pump is 0.7ml / h, and the receiving distance is 15cm, regenerated silk fibroin / polyethylene glycol energy storage and temperature-regulating composite nanofiber membrane, the average diameter of nanofibers is 101±14.23nm, and the phase transition temperature is 29.6 o C, the heat storage enthalpy value is 53J / g.

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Abstract

The invention relates to a biomedical energy-storage and temperature-adjusting fibrous membrane and a preparation method thereof. The fibrous membrane is composed of 50 to 80 percents of regenerated silk protein and 20 to 50 percents of polyethylene glycol. The polyethylene glycol and the regenerated silk protein are combined through a hydrogen-bond interaction. The regenerated silk protein is used as basis materials. The polyethylene glycol is used as phase energy storage materials. The preparation method of the biomedical energy-storage and temperature-adjusting fibrous membrane comprises the steps that the polyethylene glycol with weight-average molecular weight ranging from 600 to 1000 is added to aqueous solution of the regenerated silk protein to obtain spinning solution, and the fibrous membrane is obtained through electrostatic spinning. The preparation method of the biomedical energy-storage and temperature-adjusting fibrous membrane has the advantages of being simple, convenient, environmental-protection, free from pollution and low in cost and is suitable for industrial production; the fibrous membrane has excellent temperature adjusting performance and proper mechanical property, biocompatibility is good, and the fibrous membrane can be applied to the fields of wound healing, tissue regeneration and the like.

Description

technical field [0001] The invention belongs to the technical field of biopolymer non-woven materials, and particularly relates to a biomedical energy storage temperature-regulating fiber membrane and a preparation method thereof. The fiber membrane is composed of regenerated silk fibroin and polyethylene glycol, and is biodegradable and compatible with It is biocompatible and can be used as a drug-loaded fiber membrane. Background technique [0002] Regenerated Silk Fibroin (RSF) is a natural protein obtained from silkworm cocoons. It has good biocompatibility and degradability, good air and moisture permeability, and low immunogenicity. It has been widely used in biomedicine and other fields. Moreover, the regenerated silk fibroin nanofibers obtained by electrospinning technology have the characteristics of small size, large specific surface area and excellent physical properties, which further expands its application prospects in the fields of biological tissue engineeri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4382D01D5/00
Inventor 罗杰宋国林唐国翌赵亮陈耀刚唐淼杨艳阳刘源陈丽杰
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV