PMTFPS-b-PMAA嵌段共聚物的合成与胶束化  

Synthesis and Micellization of PMTFPS-b-PMAA Block Copolymers

作　　者：张佳文[1] 易玲敏[1,2] 徐凯[1,2] 李静[1,2] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [2]浙江理工大学生态染整技术教育部工程研究中心,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2015年第6期761-765,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(21276243)

摘　　要：为了探究两亲性含氟硅嵌段共聚物的溶液胶束化行为及其在纳米粒子分散中的应用,通过采用氟硅单体1,3,5-三甲基-1,3,5-三(3,3,3-三氟丙基)环三硅氧烷(简称F3)的阴离子开环聚合(ROP)、甲基丙烯酸叔丁酯(tBMA)的原子转移自由基聚合(ATRP),合成了PMTFPS-b-PtBMA嵌段共聚物,该嵌段共聚物水解得到两亲性PMTFPS-b-PMAA嵌段共聚物。研究表明,PMTFPS-b-PMAA嵌段共聚物在丙酮/水混合溶剂中,可形成球形、支化短棒或珍珠链状等聚集体;而在二氧六环/水溶剂体系中,可得到不同于丙酮/水体系中的囊泡或复合囊泡结构。最后,利用两亲性PMTFPS-b-PMAA嵌段共聚物胶束,成功分散、稳定了预先还原的金纳米粒子。In order to investigate the micellization behaviour of amphiphilic fluorosilicone-contained block copolymers and their application in dispersing nanoparticles,PMTFPS-b-PtBMA block copolymer was synthesized by anionic ring-opening polymerization(ROP)of 1,3,5-trimethyl-1,3,5-tris(3′,3′,3′-trifluoropropyl)cyclotrisiloxane(F3),and atom transfer radical polymerization(ATRP)of tert-butyl methacrylate(tBMA).Amphiphilic PMTFPS-b-PMAA block copolymer was gained through hydrolyzation of the block copolymer.The results show that PMTFPS-b-PMAA block copolymers can form aggregates such as spheres,branched rods or pearl-necklace in acetone/water mixed solvent;in dioxane/aqueous solution system,vesicles or compound vesicles different in acetone/water system can be gained.Finally,gold nanoparticles reduced in advance were successfully dispersed and stabilized by the micelles of amphiphilic PMTFPS-b-PMAA block copolymers.

关 键 词：氟硅 聚甲基丙烯酸 两亲性嵌段共聚物 胶束化 金纳米粒子 

分 类 号：O634.4[理学—高分子化学]