合成纤维

2013, v.42;No.287(01) 7-12

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氯化钙对间位聚芳砜酰胺/二甲基甲酰胺溶液的影响
The Effect of CaCl_2 on the Solution Behavior of Poly(3,3'-diphenylsulfone isophthalamide)/Dimethylformamide

余优霞;陈晟辉;袁峥;陆顺兴;王华平;张玉梅;
YU You-xia1,CHEN Sheng-hui2,YUAN Zheng1,LU Shun-xing2,WANG Hua-ping1,ZHANG Yu-mei1(1.State Key of Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China;2.Shanghai Tanlon Fiber Co.Ltd.,Shanghai 201419,China)

摘要(Abstract):

通过黏度法和电导率研究了间位聚芳砜酰胺——聚间二苯砜间苯二甲酰胺(mi-PSA)在二甲基甲酰胺(DMF)/氯化钙(CaCl)2中的稀溶液行为。结果表明:mi-PSA的特性黏度强烈依赖于CaCl2质量浓度的变化,并随着CaCl2质量浓度的增大出现最大值。针对这一现象,采用黏度法研究了CaCl2在DMF中的存在形式,推测CaCl2以[(DMF)4Ca]2+Cl2-形式存在于DMF中,Cl-与mi-PSA中酰胺基团上的氢原子相互作用,导致mi-PSA在DMF/CaCl2中产生聚电解质效应。电导率随CaCl2质量浓度变化的结果同样说明了mi-PSA在DMF/CaCl2中存在着聚电解质效应。
The dilute solution properties of poly(3,3'-diphenylsulfone isophthalamide)(mi-PSA) in DMF/CaCl2 were studied by an Ubbeholde viscometer and a Conductivity meter.It is found that the variations of intrinsic viscosity [η] of mi-PSA depend on the CaCl2 concentration and there is a maximum in[η] as a function of CaCl2.Thus the interactions between CaCl2 and DMF were studied and it was deduced that CaCl2 could be in form of [(DMF)4Ca]2+Cl2-in DMF by an Ubbeholde viscometer.Cl-will be associated with N—H groups of the macromolecule which result in the polyelectrolyte behavior of mi-PSA.The result of conductivity as a function of CaCl2 concentration also explains that mi-PSA behaves as polyelectrolyte in DMF/CaCl2.

关键词(KeyWords): 聚芳砜酰胺;溶液特性;电解质效应;特性黏度;电导率
aromatic polysulfonamide,solution property,polyelectrolyte behavior,intrinsic viscosity,conductivity

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金的资助“(利用同步辐射技术研究聚芳砜酰胺纤维沿纺程的相态结构变化”,编号11079015)

作者(Author): 余优霞;陈晟辉;袁峥;陆顺兴;王华平;张玉梅;
YU You-xia1,CHEN Sheng-hui2,YUAN Zheng1,LU Shun-xing2,WANG Hua-ping1,ZHANG Yu-mei1(1.State Key of Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China;2.Shanghai Tanlon Fiber Co.Ltd.,Shanghai 201419,China)

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DOI: 10.16090/j.cnki.hcxw.2013.01.001

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