酚酞基聚芳醚砜非对称超滤膜凝胶动力学研究  

STUDY ON THE GELATION KINETICS IN POLYETHERSULFONE WITH CARDO ASYMMETRIC ULTRAFILTRATION MEMBRANE

作　　者：李昕[1] 赵欣[2] 陈翠仙[2] 李继定[2] 

机构地区：[1]北京理工大学化工与环境学院生态工业研究所,北京100081 [2]清华大学化工系,北京100084

出　　处：《高分子学报》2007年第11期1074-1079,共6页Acta Polymerica Sinica

基　　金：国家基础研究发展计划(973计划;项目号2003CB615701);国家自然科学基金(基金号20576059);中石化科技开发研究基金(基金号X505002);中石油风险创新基金;北京理工大学优秀青年教师资助计划(基金号2006Y0510);北京理工大学校基础研究基金(基金号20070542006)资助项目

摘　　要：采用耐高温工程塑料——含酚酞侧基的聚芳醚砜(PES-C)为膜材料,草酸和聚乙二醇为添加剂,N,N-二甲基乙酰胺为溶剂,并利用改进的凝胶动力学实验装置和方法,使之能真实地再现不同膜孔结构生长及发展演化的过程,借助相关软件对图像进行处理,考察了添加剂、聚合物浓度对铸膜液凝胶速度的影响,对酚酞基聚芳醚砜非对称膜的凝胶过程的动力学进行研究.结果表明,动力学图像与最终膜结构有很好的一致性,凝胶动力学方面得到了与Strathman等不同的研究结果,发现凝胶前锋位移的平方与时间不是线性关系,凝胶动力学过程不能简单地用Fick扩散定律来描述.Polyethersulfone with cardo （PES-C） was a developed engineering thermoplastic and membrane material with high glass transition temperature, PES-C ultrafiltration membranes were prepared by phase inversion method using dimethylacetamide （DMAC） as solvent and oxalic acid （OA） and polyethylene glycol as additives. The membrane morphology forming and evolution could be observed by the experimental system and method. The effect of additive and polymer concentration on cast solution and the gelation kinetics of polyethersulfone with cardo asymmetric membrane were studied. The result showed that the gelation kinetics and membrane morphology were coincident. It was found that the relation between the square of gelation front motion and time was nonlinear, the gelation kinetics process did not follow the Fick diffusion behavior,which was different from the result of Strathman et al.

关 键 词：凝胶动力学 非对称膜 相转化 聚芳醚砜 

分 类 号：TQ320[化学工程—合成树脂塑料工业]