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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
关键词
包覆
St
AA
BA
复合共聚物
核壳型
氧化铁
Encapsulating Fe2O3
St/AA/BA core-shell composite copolymer
Glass transition temperature
Rheological properties
