包覆Fe_2O_3超微粒的苯乙烯/丙烯酸/丙烯酸丁酯核-壳型复合共聚物的性能研究  

The Properties of St/AA/BA Core-shell Composite Encapsulated Fe2O3 Nanoparticles

作　　者：陈平[1] 杜惠[2] 刘凤歧[2] 李铁津 汤心颐[2] 

机构地区：[1]抚顺石油学院材料科学与技术研究所,抚顺113001 [2]吉林大学化学系,长春130023

出　　处：《高等学校化学学报》1998年第1期148-151,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：对采用种子乳液聚合法合成的包覆Fe2O3超微粒的苯乙烯／丙烯酸／丙烯酸丁酯（St／AA／BA）核-壳型复合共聚物材料进行玻璃化温度测试，结果表明，加入Fe2O3超微粒，使复合共聚物的玻璃化温度显著降低．对复合共聚物的流变行为研究表明，复合共聚物的非牛顿指数均小于1，且随着Fe2O3含量增加，非牛顿性增强，表观粘度下降，粘流活化能降低．Fe2O3 nanoparticles were encapsulated in the core-shell composite copolymers of St/AA/BA (styrene/acrylic acid/butyl acrylate) by seed emulsion polymerization process.The influence of Fe2O3 on rheological behavior and glass transition temperature (Tg) of St/AA/BA core-shell composite copolymer was discussed. The result of DSC showed that the addition of Fe2O3 nanoparticles could decrease Tg for the composite copolymer. According to the rheological properties, the core-shell copolymers were all pseudoplastics and their nonNewtonian index was less than 1. The viscosity and △E decrease with the increase of the Fe2O3 content.

关 键 词：包覆 St AA BA 复合共聚物 核壳型 氧化铁 

分 类 号：TB332[一般工业技术—材料科学与工程]