Electric spinning-in-situ photopolymerization apparatus and process for preparing nanometer fiber

A nanofiber and electrospinning technology, which is applied in the field of electrospinning, can solve the problems of poor mechanical strength of electrospun membranes, achieve the effect of improving mechanical strength and water resistance, and leaving no residue

Inactive Publication Date: 2006-10-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is to solve the problem of poor mechanical strength of electrospun membranes prepared by hydrophilic polymers, and realize the preparation of nanofiber non-woven fabrics with excellent mechanical strength and water resistance, and is non-toxic.

Method used

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  • Electric spinning-in-situ photopolymerization apparatus and process for preparing nanometer fiber
  • Electric spinning-in-situ photopolymerization apparatus and process for preparing nanometer fiber
  • Electric spinning-in-situ photopolymerization apparatus and process for preparing nanometer fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 9.00 g polyvinyl alcohol (polymerization degree 3500, alcoholysis degree 88%), dissolve in 100 ml deionized water, and prepare 9% PVA aqueous solution. Weigh 7.00g chitosan (viscosity average molecular weight 120000, degree of deacetylation 82.5%) and dissolve in 20% (v / v) acrylic acid solution (acrylic acid 20.0ml, deionized water 80.0ml). Take 3.0ml of PVA aqueous solution and 1.6ml of chitosan acrylic acid solution, mix well, add ethylene glycol diacrylate 0.0764g, then add photoinitiator 1173 (2-hydroxy-2-methyl-1-phenylacetone -1) 0.0076g, mix well and defoam.

[0026] (2) Electrospinning the mixed liquid obtained in the step (1), supplemented by UV ultraviolet light at the same time, to obtain a nanofiber nonwoven fabric with excellent mechanical properties and water resistance. The mixed solution is added in the spinning vessel 1 of the spinning device, the flow velocity at the solution spinning outlet 3 is about 1.0ml / h, the applied voltage is 26KV, a...

Embodiment 2

[0031] All other steps, conditions are with embodiment 1. The difference is that 0.0038 g of polyethylene glycol bis(meth)acrylate was added, and 0.00004 g of DMPA (α,α-dimethoxy-α-phenylacetophenone) was added.

Embodiment 3

[0033] All other steps, conditions are with embodiment 1. The difference is that 0.0764 g of pentaerythritol tetraacrylate was added, and 0.0008 g of photoinitiator 1173 (2-hydroxy-2-methyl-1-phenylacetone-1) was added.

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Abstract

The electric spinning and in-situ photopolymerization apparatus and process for preparing nanometer fiber belongs to the field of electric spinning technology. The electric spinning apparatus includes one common electric spinning apparatus and one ultraviolet or visible light generator set between the spinning nozzle and the accepting screen of the common electric spinning apparatus. The electric spinning process includes the following steps: compounding water solution or organic solvent solution of water soluble polymer and adding polyfunctional monomer and photoinitiator to the solution through homogeneous mixing; electrically spinning the solution while irradiating, with the central light strength being 100-400 mw / sq cm; and soaking nanometer fiber non-woven fabric in acetone, and drying to obtain nanometer fiber non-woven fabric. The nanometer fiber non-woven fabric has high mechanical strength and no toxicity, and may be used widely.

Description

technical field [0001] The invention relates to a device and method for preparing nanofiber non-woven fabrics with excellent mechanical properties and water resistance by using electrospinning technology combined with photopolymerization technology, and belongs to the field of electrospinning technology. Background technique [0002] The electrospinning technology originated from the invention patent of Formhals in 1934, and it is a simple and quick technology for preparing nano-scale fibers. [0003] At the end of the 20th century, with the rapid development of nanotechnology, electrospinning technology has attracted more and more attention, and the number of research results and invention patents on electrospinning has increased exponentially every year. Due to their unique properties, such as high specific surface area and porosity, electrospun fibers are widely used in various devices, such as filtration membrane devices, sensing devices, especially in biomedical fields....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D5/00D01F2/00D01F6/14D01F9/00D01F9/04D04H13/00
Inventor 聂俊周应山甄洪鹏杨东芝
Owner BEIJING UNIV OF CHEM TECH
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