| PAN湿法纺丝凝固过程中相分离机理初探 |
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| 引用本文： | 陈娟,葛曷一,柳华实,李国忠,王成国.PAN湿法纺丝凝固过程中相分离机理初探[J].功能材料,2009,40(3). |
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| 作者姓名： | 陈娟 葛曷一 柳华实 李国忠 王成国 |
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| 作者单位： | 陈娟,葛曷一,柳华实,李国忠,CHEN Juan,GE He-yi,LIU Hua-shi,LI Guo-zhong(济南大学,材料科学与工程学院,山东,济南,250022);王成国,WANG Cheng-guo(山东大学,材料科学与工程学院,山东,济南,250061)
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| 基金项目： | 国家高技术研究发展计划(863计划)，济南大学博士基金 |
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| 摘 要： | 利用Tompa拓展的Flory-Huggins溶液理论,对聚丙烯腈(PAN)湿法纺丝凝固过程中相分离机理进行了初步探讨.针对聚合物/溶剂/非溶剂体系,计算了溶剂-非溶剂、溶剂-聚合物以及非溶剂-聚合物的体系相互作用参数,得到了高浓度三元体系的双节线.结果表明,相对于二甲基甲酰胺(DMF)币二甲基乙酰胺(DMAc),以二甲基亚砜(DMS0)为溶剂的体系中双节线离聚合物-溶剂轴的距离最远,非溶剂与溶剂之间的双扩散缓和,是纺丝体系中溶剂的最佳选择.湿法纺丝的相分离存在瞬时双扩散和迟豫双扩散两种机理,瞬时双扩散机理引起纤维内部产生孔洞.
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| 关 键 词： | 湿法纺丝 相分离 双节线 |
The phase separation mechanism during coagulation process in PAN wet-spinning |
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| CHEN Juan,GE He-yi,LIU Hua-shi,LI Guo-zhong,WANG Cheng-guo.The phase separation mechanism during coagulation process in PAN wet-spinning[J].Journal of Functional Materials,2009,40(3). |
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| Authors: | CHEN Juan GE He-yi LIU Hua-shi LI Guo-zhong WANG Cheng-guo |
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| Affiliation: | 1.School of Material Science and Engineering;University of Ji'nan;Ji'nan 250022;China;2.School of Material Science and Engineering;Shandong University;Ji'nan 250061;China |
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| Abstract: | According to Tompa's extending Flory-Huggins solution theory,the phase separation mechanism during coagulation process in PAN wet-spinning was studied.The solution interaction parameters of solvent-nonsolvent,solvent-polymer and nonsolvent-polymer in polyacrylonitrile(PAN)/Dimethyl Sulphoxide(DMSO)/water,PAN/Dimethylformamide(DMF)/water and PAN/ Dimethylacetamide(DMAc)/water system were calculated.The binodal curves of ternary system in high concentration solution were calculated and drawn.The results showe... |
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| Keywords: | PAN |
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