论文部分内容阅读
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.
Polymethylene triblock polymer was prepared by the combination of Ylider active polymerization and atom transfer radical polymerization (ATRP). First, the polymethylene PM-OH), and then reacted with 2-bromoisobutyryl bromide to obtain a bromine-containing macroinitiator (PM-Br), followed by polymerization of ATRP of tert-butyl acrylate to obtain a polymethylene-b-polyacrylic acid Butyl methacrylate (PM-bPt-BA). Finally, the ATRP of styrene was re-polymerized to obtain polymethylene-b-t-butyl polyacrylate-b-polystyrene Respiration graph method The obtained block copolymer was respectively prepared with chloroform (CHCl3) and carbon disulfide (CS2) as a solvent to prepare a porous film. The morphology of the prepared film was observed with a scanning electron microscope (SEM) (PS) segment length and film forming temperature on the morphology of porous films.