Effect of CaCl<sub>2</sub> on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF

YU Youxia; XIA Xiaolin; CHEN Shenghui; WANG Xiaofeng; WANG Huaping; ZHANG Yumei

doi:10.3969/j.issn.0438-1157.2013.09.049

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Effect of CaCl₂ on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF

更新时间：2025-12-10

- Effect of CaCl₂ on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF
- CIESC Journal Issue 9, Pages: 3446-3453(2013)
- 作者机构：
  
  1. 东华大学纤维材料改性国家重点实验室,上海,201620
  2. 上海特安纶纤维有限公司,上海,201419
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.09.049
  CLC： 631.2
- Online First：05 September 2013，
  
  Published：05 September 2013
- 稿件说明：
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YU Youxia, XIA Xiaolin, CHEN Shenghui, et al. Effect of CaCl₂ on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF[J]. CIESC Journal, 2013, (9): 3446-3453. DOI: 10.3969/j.issn.0438-1157.2013.09.049.
DOI：

YU Youxia, XIA Xiaolin, CHEN Shenghui, et al. Effect of CaCl₂ on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF[J]. CIESC Journal, 2013, (9): 3446-3453. DOI: 10.3969/j.issn.0438-1157.2013.09.049. DOI：

摘要

为了研究CaCl2对聚间二苯砜对苯二甲酰胺(mt-PSA)在DMF中分子构象和形态的影响

采用流变仪测定了mt-PSA/DMF/CaCl2浓溶液的流变行为

并通过乌氏黏度计和激光光散射研究其稀溶液的溶液黏度和高分子形态尺寸。结果表明:CaCl2的加入增大了大分子与溶剂在mt-PSA/DMF/CaCl2浓溶液和其稀溶液中的相互作用

同时CaCl2使大分子链段得到舒展。但大分子的重均分子量没有发生明显的变化

说明CaCl2未使mt-PSA高分子链段发生聚集或者坍塌。

Abstract

In order to study the effect of CaCl2 on macromolecular conformation and form of poly(3

3'-diphenylsulfone terephthalamide)(mt-PSA)in DMF

rheological behavior of concentrated solutions was studied with rheometer.Solution viscosity and coil dimension of diluted solutions were analyzed by viscosity and light scattering measurements.Addition of CaCl2increased specific viscosity(ηsp)of concentrated solutions

and increased intrinsic viscosity([η])and hydrodynamic radius(Rh)of dilute solutions due to the interaction between macromolecule and solvent.The mt-PSA chain extended with the addition of CaCl2.However

the weight-average molecular weight(Mw)of mt-PSA had no significant change by addition of CaCl2.This would indicate that the conformation of macromolecule did not collapse or aggregate.

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Effect of CaCl2 on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF

DOI：10.3969/j.issn.0438-1157.2013.09.049

摘要

Abstract

关键词

Keywords

references

Effect of CaCl₂ on solution properties of poly(3,3’-diphenylsulfone terephthalamide)in DMF