Study on Preparation and Electrospinning of Different Molecular Weight Polyacrylonitrile

Yang YU; Quan-yuan CHEN; Mei-hua ZHOU

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Study on Preparation and Electrospinning of Different Molecular Weight Polyacrylonitrile

更新时间：2022-09-18

- Study on Preparation and Electrospinning of Different Molecular Weight Polyacrylonitrile
- Polymer Bulletin Vol. 25, Issue 2, Pages: 64-72(2012)
- 作者机构：
  
  东华大学环境科学与工程学院，上海　201620
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012-02，
  
  Received：24 April 2011，
  
  Revised：13 October 2011，
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Yang YU, Quan-yuan CHEN, Mei-hua ZHOU. Study on Preparation and Electrospinning of Different Molecular Weight Polyacrylonitrile. [J]. Polymer Bulletin 25(2):64-72(2012)
DOI：

Yang YU, Quan-yuan CHEN, Mei-hua ZHOU. Study on Preparation and Electrospinning of Different Molecular Weight Polyacrylonitrile. [J]. Polymer Bulletin 25(2):64-72(2012) DOI：

摘要

采用DMSO/H

O混合溶剂法制备了5种不同分子量的PAN

并以PAN为原料

DMF为溶剂

配成纺丝溶液

通过高压静电纺丝技术制备超细纤维毡(UFFM)。研究表明

相同单体组成和浓度、相同反应条件情况下

通过聚合制备PAN

随着混合溶剂中水含量的增加

生成的PAN粘均分子量相应增加

其转化率也增加。聚合所得的不同分子量PAN的热重分析显示

随着PAN分子量的增加

热重曲线的剧烈失重区会越来越明显

剧烈失重区的失重率也呈增加的趋势;高压静电纺丝研究发现

PAN-4和PAN-5纺丝溶液由于分子量过高而不可纺;另外

研究还发现

较高的纺丝电压有利于纤维直径的减小

但相应的纺丝稳定性减小

导致纤维直径分布的离散度增加。

Abstract

Five kinds of PAN with different molecular weight were polymerized via DMSO/H

O mixed solvent method

and the PAN was dissolved into the spinning solution with DMF as solvent and electrospun into UFFMs. The polymerization results showed that viscosity average molecular weight and conversion rate of PAN would increase with higher H

O ratio in mixed solvent at the same monomer concentration and environment conditions. From the TG analysis

dramatic weight loss zone would appear and the weight loss ratio would larger with PAN molecular weight increasing. Electrospinning results showed that the spinning solution could not be electrospun into ultra-fine fiber if the molecular weight of PAN was too high

and the higher electrospinning voltage was favorable for finer fiber diameter but cause larger dispersion of fiber diameter distribution with the electrospinning stability decreasing.

关键词

聚丙烯腈高压静电纺丝超细纤维毡聚合热重

Keywords

PolyacrylonitrileElectrospinningUltra-Fine Fiber MatDMSO/H2OPolymerizationThermogravimetric Analysis

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