天津工业大学学报2016，Vol.35Issue(2)：18-23,6.DOI:10.3969/j.issn.1671-024x.2016.02.004
双亲性嵌段共聚物PMMA-b-PS的制备及其自组装
Synthesis of poly(methyl methacrylate)-b-polystyrene with DPE polymerization and its self-assembly morphology
摘要
Abstract
Synthesis of poly (methyl methacrylate)-b-polystyrene (PMMA-b-PS) with potassium persulfate (KPS) as an initiator was carried out in emulsion polymerization, using a novel chain transfer active 1,1-diphenylethylene (DPE). First the precursor PMMA-DPE latex was prepared by using the controlled/living free radical emulsion polymerization, then the second monomer was swelled into the latex, last, the block copolymer was prepared. The structures and molecular weight of the PMMA-DPE and PMMA-b-PS were characterized by 1HNMR and GPC. The results showed that the PMMA-b-PS was successfully synthesized, and the polymerization could be controlled. Then the effect of solvent or high temperature annealing on block copolymer membrane self-assembly was studied by the scanning electron microscope (SEM). The results manifested that the morphology of the copolymer presents nanodot array. After etching the PMMA segment, the morphology of the copolymer presents nanoporous array with PS as substratum. The diameter of the nanoporous was 80 nm and its pitch was about 200 nm. Solvent annealing is a better method to form small and uniform nanoporous, because of the copolymer in a supersaturated vapor pressure condition.关键词
1,1-二苯基乙烯(DPE)/两嵌段共聚物/自组装Key words
DPE/diblock copolymer/self-assembly分类
化学化工引用本文复制引用
王建平,康召青,高阳,李伟,王学晨,张兴祥..双亲性嵌段共聚物PMMA-b-PS的制备及其自组装[J].天津工业大学学报,2016,35(2):18-23,6.基金项目
国家自然科学基金资助项目（50573058，51203113，51573135）；航空科学基金项目（201229Q2002）；天津市科技计划项目 （）
