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Influence of Molecular Weight of Ultra-high Molecular Weight Polyacrylonitrile on Its Rheological Behavior in Dimethylsulfoxide

沈新元朱新远刘永建

东华大学学报（英文版）2001，Vol.18Issue(3)：7-10,4.

Influence of Molecular Weight of Ultra-high Molecular Weight Polyacrylonitrile on Its Rheological Behavior in Dimethylsulfoxide

沈新元 ¹朱新远 ²刘永建¹

作者信息

1. State Key Laboratory for Modification of Chemical Fiber and Materials, Dong Hua University, Shanghai, 200051
2. Department of Applied Chemistry, Shanghai Jiaotong University, Shanghai, 200030
折叠

摘要

Abstract

Ultra-high molecular weight polyacrylonitrile (UHMW PAN ) was prepared by aqueous suspension polymerization, and the effect of molecular weight on its rheological behaviors in dimethylsulfoxide (DMSO) and the spinning stability were investigated. It shows that,compared with common polyacrylonitrile (C-PAN),UHMW- PAN/DMS0 solution has smaller non- Newtonian index, larger structural viscosity index, much longer maximum relaxation time, and no first- Newtonian region appears in the flow curves under the same experimental conditions. The explanations for these phenomena are given in the view of chain- entanglements. The optimal technology of preparing UHMW-PAN fibers and hollow fiber membranes could be obtained based on the theological study.

关键词

ultra-high molecular weight polyacrylonitrile/rheological behavior/spinnability

Key words

ultra-high molecular weight polyacrylonitrile/rheological behavior/spinnability

分类

化学化工

引用本文复制引用

沈新元,朱新远,刘永建..Influence of Molecular Weight of Ultra-high Molecular Weight Polyacrylonitrile on Its Rheological Behavior in Dimethylsulfoxide[J].东华大学学报（英文版）,2001,18(3):7-10,4.

基金项目

This work was supported by Shanghai Natural Science Foundation (98ZF14001) （98ZF14001）

东华大学学报（英文版）

ISSN：1672-5220

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