浊点滴定法研究PAN-DMSO-H_2O体系的相行为  

Study on phase behavior of PAN-DMSO-H_2O ternary system by cloud-point titration method

作　　者：胡娟[1] 曾小梅[1] 董瑞蛟[1] 张幼维[1] 赵炯心[1] 吴承训[1] 潘鼎[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维工业》2008年第4期5-8,共4页China Synthetic Fiber Industry

基　　金：国家973资助项目(2006CB605302及2006CB605303);中国国家自然科学基金重点项目(50333050)

摘　　要：采用浊点滴定法研究了聚丙烯腈-二甲基亚砜-水(PAN-DMSO-H_2O)三元体系的浊点组成及其相分离行为。结果表明:当PAN-DMSO-H_2O三元体系达到相分离时,浊点曲线上各点成分有一定线性关系。根据该线性关系推导了高聚合物浓度的浊点成分,获得不同温度下的PAN-DMSO-H_2O三元相图。浊点滴定法测定体系浊点组成,精度高,相对平均偏差小。The phase separation behavior and cloud-point composition of the ternary system of polyacrylonitrile, dimethyl sulphoxide and water （PAN-DMSO-H20） were studied by cloud-point titration. The results showed that the components exhibited a linear correlation along the cloud point curve when the phase separation of PAN-DMSO-H20 ternary system occurred. The cloudpoint composition was deduced at high polymer concentrations according to the linear correlation. And the ternary phase diagrams of PAN-DMSO-H2O system were also obtained at different temperatures. The cloud-point titration method for determining the cloud point composition of the system was of high precision and low relative average deviation.

关 键 词：聚丙烯腈 二甲基亚砜 三元体系 浊点滴定 浊点曲线 相图 

分 类 号：TQ342.74[化学工程—化纤工业]