丙烯腈共聚物溶液的流变性和相分离性能研究  

Study on rheological behavior and phase separation behavior of acrylonitrile copolymer solution

作　　者：姜秉新[1,2] 张幼维[1] 武永涛[1] 徐永芬[3] 吴承训[1] 

机构地区：[1]东华大学材料科学与工程学院,上海200016 [2]徐州空军学院航空油料物资系,江苏221000 [3]东华大学化学与化工学院,上海200016

出　　处：《合成纤维工业》2009年第1期26-29,共4页China Synthetic Fiber Industry

基　　金：国家自然科学基金项目(20074004)

摘　　要：通过红外光谱和核磁共振分析,对不同丙烯腈共聚物(PAN1,PAN2)分子结构进行表征。通过哈克流变仪测定溶液流变性,结果表明共聚物的相对分子质量和第二单体含量对溶液流变性有影响。通过扫描电镜观察膜的形态,并通过热力学和动力学对膜形态进行了讨论。PAN2相对分子质量与第二单体含量较高造成相互作用参数偏高,相对PAN1表现出更易分相特征,分相过程中聚合物贫相所占膜的体积分数偏高,形成的膜孔洞较大。The molecular structures of different acrylonitrile copelymers （ PAN1 , PAN2 ） were characterized by IR spectroscopy and nuclear magnetic resonance spectroscopy. The rheological behavior of the solution was measured with Haake rheometer. The relative molecular weight mass and the second monomer content of the copolymers had an effect on the rheological behavior of the solution. The membrane morphology was observed by scanning electron microscopy and was discussed by thermodynamic and kinetic analyses. PAN2 had relatively high relative molecular weight mass and the second monomer content resulting in the interaction parameter on the high side and was more prone to phase separation as compared with PAN1. The volume fraction of lean phase was relatively high in the membrane during the phase separation. The fairly big holes formed in the membrane.

关 键 词：聚丙烯腈 流变性 膜形态 相对分子质量 

分 类 号：TQ342.31[化学工程—化纤工业]