聚苯乙烯纳米棒的界面法合成  

Preparation of polystyrene nano-rods via interfacial polymerization route

作　　者：苏碧桃[1] 费鹏[1] 张小红[1] 孙佳星[1] 胡常林[1] 左显维[1] 雷自强[1] 

机构地区：[1]西北师范大学化学化工学院甘肃省部共建生态环境相关高分子材料教育部重点实验室甘肃省高分子材料重点实验室,甘肃兰州730070

出　　处：《化学试剂》2009年第12期967-970,共4页Chemical Reagents

基　　金：甘肃省自然科学基金资助项目(0710RJZA119)

摘　　要：首次采用界面聚合法成功地合成了聚苯乙烯(PS)纳米棒,利用透射电镜(TEM)、扫描电镜(SEM)、选区电子衍射(SAED)、红外光谱(FT-IR)及凝胶渗透色谱(GPC)等技术对其形貌和结构进行了表征。考察了单体浓度、反应时间与温度及有机溶剂等对聚苯乙烯形貌的影响。结果表明,以甲苯作为有机相溶剂、单体浓度为1.70mol/L、60℃下反应10h时能够得到平均直径为20nm左右的纳米棒。样品的选区电子衍射(SAED)图与等规聚苯乙烯(i-PS)单链单晶的六方点阵衍射一致,GPC测试表明产物相对分子质量较低,且其分布范围较窄。Polystyrene （PS） nano-rods were successfully synthesized via interracial polymerization（IP） for the first time. Their morphologies and structures were characterized by means of TEM, SEM, SAED, FT-IR and GPC techniques. Effects of the monomer concentration, reaction time and temperature, and the different organic solvents on PS morphology were investigated. The results showed that the polystyrene nano-rods with the average diameter of 20 nm were prepared when the monomer concentration was around 1.70 mol/L by using methylbenzene as organic solvent at 60 ℃ for 10 h. The SAED analysis proved that PS was hexagonal lattice, which was the same as the single-chain single crystal of i-PS. GPC results showed that the final products have small relative molecular weight and narrow molecular weight distribution.

关 键 词：聚苯乙烯 纳米棒 界面聚合 表征 

分 类 号：O632[理学—高分子化学]