RAFT聚合方法在碳纳米管表面接枝嵌段共聚物

Grafted Block Copolymer onto the Surface of MWNT by RAFT Method

首先在碳纳米管表面接上可用做RAFT聚合的链转移剂——二硫代碳酸酯,然后用这些管壁接有二硫代碳酸酯的碳纳米管作为链转移剂引发甲基丙烯酸甲酯和苯乙烯单体进行可控的嵌段聚合反应,首次报道了采用二步加料方式在碳纳米管的管壁上接枝上嵌段共聚物链。对嵌段共聚物的结构进行了红外光谱(FT-IR)、热重分析(TGA)、透射电镜(TEM)表征。

Reversible Addition-fragmentation Chain Transfer （RAFT） is a new effective method to prepare controlled block copolymers. In this article, dithioester compounds were grafted onto the surface of carbon nanotubes as chains transfer agent of reversible addition-fragmentation chain transfer （RAFT） polymerization. Then the Polystyrene （PS） and polymethyl methacrylate （PMMA） block copolymer chains were grown from the surface of carbon nanotubes via RAFT polymerization. The structures of the testing products were characterized by FT-IR, TGA, TEM.