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会议：第十二届亚洲纺织会议暨2013中国纺织学术年会

时间：2013年10月24-26日

地点：上海东华大学

分会场：纺织品性能、测试与评价

报告题目：棉竹节纱物理和机械性能的统计模型

报告人：Muhammad Bilal Qadir

报告英文简介：

There are two well-known methods to prepare poly(phenylene sulfide) (PPS) in mass production. One is a solution-polymerization method using p-dichlorobenzene and sodium sulfide using N-methyl-2-pyrrolidone (NMP) as a solvent at very low polymerization yield. It, however, gives PPS with relatively low degree of branching which is especially suitable for the fiber production through melt-spinning. The other is melt-polymerization method using p-diiodobenzene and sulfur without any solvent at very high polymerization yield. However, the latter method gives relatively high degree of branching, which is not suitable for fiber production. As PPS has not been found to dissolve in any solvent at temperatures below about 200 °C, the physical characterization of as-polymerized PPS such as average molecular weight and the degree of branching is not possible through viscosity measurement and NMR measurement at room temperature using its solution. This makes it very difficult to control the quality of as-polymerized PPS in the PPS manufacturing factory regardless of polymerization methods. Recently we developed the method of dissolving PPS in various polar solvents at room temperature after slight chemical modification of as-polymerized PPS. This successful method enables us to evaluate the average molecular weight and the degree of branching through solution viscosity measurement and proton-NMR spectroscopy, respectively.

【专题】第十二届亚洲纺织会议暨2013中国纺织学术年会

http://www.ctei.gov.cn/special/2013nzt/atc12/