Responsive Composite Janus Cages  

作　　者：Qi-guang Wang 梁福鑫 Qian Wang Xiao-zhong Qu 杨振忠 

机构地区：[1]State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences

出　　处：《Chinese Journal of Polymer Science》2015年第10期1462-1469,共8页高分子科学（英文版）

基　　金：financially supported by the Ministry of Science and Technology of China(No.2012CB933200);the National Natural Science Foundation of China(Nos.51233007 and 51173191)

摘　　要：pH responsive composite Janus cages of PS-silica-PEO are prepared using silica nanoparticles to crosslink two PAA contained di-block copolymers at an emulsion interface sequentially. Transverse channels are in situ created across the shell, which facilitates mass transfer. Shell is pH responsive owing to the presence of residual PAA chains tethered onto the silica nanoparticles. The Janus cages are capable to preferentially capture oil from their aqueous surroundings. The saturation absorption capacity is determined by pH and oil property. Other composite Janus cages are expected by extension the method using other copolymers and functional nanoparticles.pH responsive composite Janus cages of PS-silica-PEO are prepared using silica nanoparticles to crosslink two PAA contained di-block copolymers at an emulsion interface sequentially. Transverse channels are in situ created across the shell, which facilitates mass transfer. Shell is pH responsive owing to the presence of residual PAA chains tethered onto the silica nanoparticles. The Janus cages are capable to preferentially capture oil from their aqueous surroundings. The saturation absorption capacity is determined by pH and oil property. Other composite Janus cages are expected by extension the method using other copolymers and functional nanoparticles.

关 键 词：Janus cages Block copolymer Composited pH response Emulsion. 

分 类 号：TQ317[化学工程—高聚物工业]