Preparation method of composite fiber film

A composite fiber membrane and composite fiber technology, which is applied in fiber processing, textile and papermaking, non-woven fabrics, etc., to achieve wide application prospects, simple and flexible processes, and fewer types of effects.

Inactive Publication Date: 2020-12-04
SUZHOU DIHILL GREEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the performance of the existing silk fibro...

Method used

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  • Preparation method of composite fiber film
  • Preparation method of composite fiber film
  • Preparation method of composite fiber film

Examples

Experimental program
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Embodiment 1

[0044]Weigh 2.000 g of gelatin, 0.17 g of silver nitrate (or 0.41 g of chloroauric acid) and 0.666 g of silk fibroin in a beaker, slowly add 5 mL of formic acid dropwise, and stir in a constant temperature water bath at 35°C until transparent and uniform And the solution has a certain viscosity, the positive and negative voltages are -7 kV and +15 kV respectively, and the injection speed is 0.2 mm min -1 , the spinning distance between the needle and the receiving plate is 15 cm, the left and right translation distance of the needle is 10 mm, and the translation speed is 200 mm s -1 Fibrous membranes were obtained under the spinning conditions. The film was placed in a vacuum oven at 60 °C overnight to remove excess water and residual solvent, and then placed under ultraviolet light for 2 h to completely reduce the precious metals on the fiber film. And through water vapor transmission test and antibacterial performance test to characterize its related properties.

[0045] ...

Embodiment 2

[0049] Weigh 3.000 g of gelatin, 0.41 g of chloroauric acid and 1.000 g of silk fibroin into a beaker, slowly add 7.5 mL of formic acid dropwise, and stir in a constant temperature water bath at 35 °C until a transparent and uniform solution with a certain viscosity is obtained. The positive and negative voltages were -10 kV and +12.5 kV respectively, the injection speed was 0.15 mm min-1, the spinning distance between the needle and the receiving plate was 20 cm, the left and right translation distance of the needle was 15 mm, and the translation speed was 200 mm s Fibrous membranes were obtained under the spinning conditions of -1. The film was kept in a vacuum oven at 60°C overnight to remove excess water and residual solvent, and then transferred to a vacuum oven at 160°C for 2 h to heat-treat the fiber membrane. And through water vapor transmission test and antibacterial performance test to characterize its related properties.

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Abstract

The invention discloses a preparation method of a composite fiber film. According to the preparation method, an electrostatic spinning method is used, by taking silk fibroin, gelatin and other naturalpolymers as fiber carriers and silver nitrate as a silver source or chloroauric acid as a gold source, the precious metal-silk fibroin/gelatin composite fiber film with good water vapor permeabilityand antibacterial performance under conventional conditions is prepared. The prepared composite fiber film has unique biological properties such as biocompatibility and biodegradability, has high mechanical properties, material processing and spinnability, and has a good inhibition effect on gram-positive bacteria and gram-negative bacteria. The composite fiber film material prepared by the invention can be used as a novel antibacterial textile raw material which is good in stability, degradable and simple and safe in preparation method, and has a wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of a composite fiber film, in particular to a preparation method of a noble metal-gelatin / silk fibroin composite fiber film. Background technique [0002] Both gelatin and silk fibroin are natural polymer materials with good biocompatibility and biodegradability. Although gelatin is cheap and easy to obtain, its poor mechanical properties, low material processing and spinnability limit its application. The excellent mechanical strength of silk fibroin can just make up for the shortcoming of gelatin. The combination of silk fibroin and gelatin not only improves the mechanical properties of gelatin, but also increases the degradation rate of silk fibroin. However, the performance of the existing silk fibroin / gelatin composite fiber materials still needs to be improved. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a composite fiber film. The p...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/413D04H1/4382D04H3/02D04H3/005D01D5/00
CPCD01D5/0038D04H1/413D04H1/4382D04H1/728D04H3/005D04H3/02D10B2401/13
Inventor 陈丰顾明华
Owner SUZHOU DIHILL GREEN TECH
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