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ע⣺Փڡ̼ϡ Vol.19, No. 1, pp. 16C20, 2004l
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A study of coagulation in wetspining by a weighing method

LU Yong-gen1 , YANG Chang-1ing2, ZHAI Lei3, LI Yong-hong3, LU Chun-xiang3 HE Fu3, LING Li-cheng3
(1College ofMaterial Sciences and Engineering, Dognhua University, Shanghai 200051, China;
2Colege of Chemistry and Chemical Engineenng, Dognhua University, Shanghai 200051, China;
3Key Lab of Carbon Material, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China)


Abstract: The influence of coagulation variables on diflusion during wet-spinning was investigated by measuring the remaining weight of the samples. The transverse structure of the coagulated sam ples was also studied. It is found that coagulation slows down with increasing dimethyl sulforide(DMSO)concentration while the transverse structure of the coagulated sam ple becomes finer. The coagulation speed is faster and the transverse structure is finer at 50 than at 30 and 80. The additive makes coagulation slower,however,some voids are generated across the coagu lated sam ples.
Key words:Polyacrylonitrile fiber; Coagulation; Mass weighting

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