基于聚亚甲基的三嵌段聚合物：合成及其多孔薄膜的制备  

Block Copolymers Based on Polymethylene: Synthesis and Fabrication of Their Porous Films

作　　者：吕会朝[1,2] 徐慎刚[1] 赵巧玲[2] 黄晋[2] 曹少魁[1] 马志[2] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450052 [2]中国科学院上海有机化学研究所,上海200032

出　　处：《化学学报》2011年第9期1126-1130,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.20604032,21074146);中国科学院上海有机化学研究所创新课题组副研择优支持项目的经费资助项目

摘　　要：利用叶立德活性聚合与原子转移自由基聚合(ATRP)相结合的方法制备得到基于聚亚甲基的两、三嵌段聚合物.首先由叶立德活性聚合及氧化反应得到末端羟基的聚亚甲基(PM-OH),再与2-溴异丁酰溴反应得到含溴末端的大分子引发剂(PM-Br),之后引发丙烯酸叔丁酯的ATRP聚合得到聚亚甲基-b-聚丙烯酸叔丁酯(PM-b-P-t-BA);最后再引发苯乙烯的ATRP聚合得到聚亚甲基-b-聚丙烯酸叔丁酯-b-聚苯乙烯(PM-b-P-t-BA-b-PS).利用呼吸图法将所得到上述嵌段共聚物分别以三氯甲烷(CHCl3)和二硫化碳(CS2)作为溶剂制备多孔薄膜,用扫描电子显微镜(SEM)观察所制备薄膜的形貌,研究了聚苯乙烯(PS)链段长度和制膜温度对多孔薄膜形貌的影响.Di- and tri-block copolymers based on polymethylene were synthesized via the combination of living polymerization of ylides and atomic transfer radical polymerization （ATRP）. Firstly, hydroxyl termi- nated polymethylene （PM-OH） was synthesized via living polymerization of ylides followed by oxidation. The macroinitiator （PM-Br） was obtained by the reaction of PM-OH and 2-bromo-2-methylproplonyl bro- mide, then initiated the ATRP of tert-butyl acrylate to obtain PM-b-P-t-BA diblock copolymers. Subse- quently, PM-b-P-t-BA-b-PS triblock copolymers were prepared using ATRP of styrene. Porous films of such di-block and tri-block copolymers were fabricated via breath-figure method with chloroform and carbon di- sulfide as solvent, respectively. The morphology of such porous film was observed by scanning electron mi- croscopy （SEM）. The effects of PS segment and temperature on the morphology of porous film were investigated.

关 键 词：聚亚甲基 嵌段共聚物 呼吸图 多孔膜 

分 类 号：TB383.2[一般工业技术—材料科学与工程]