化工学报2012，Vol.63Issue(8)：2667-2671,5.DOI:10.3969/j.issn.0438-1157.2012.08.047
四官能度过氧化物JWEB50引发的PS-b-PMMA合成与表征
Synthesis and characterization of block copolymer PS-b-PMMA with tetrafunctional initiator JWEB50
陈小祥 1单国荣1
作者信息
- 1. 化学工程联合国家重点实验室,浙江大学化工系,浙江杭州310027
- 折叠
摘要
Abstract
With the aim of synthesis block copolymers by traditional free radical polymerization, a diblock copolymer, polystyrene-b-poly (methyl methacrylate) ( PS-b-PMMA ) , was prepared by free radical polymerization with a tetra-functional peroxide initiator JWEB50. The unique feature of this initiator is the fact that one initiator contains four peroxide groups which can be sequential decomposited. The polymerization of the formation of the block copolymer was carried out by two stages. First, the polymerization of styrene (St) using JWEB50 was investigated and the polystyrene with peroxide (PSD was obtained, which was used in the second stage to initiate the second monomer, methyl methacrylate (MMA). Selective solvent extraction was used for separation of the block polymer from the homopolymers. The separation technique was found to be efficient by gel permeation chromatography (GPC). The block copolymer was characterized by gel permeation chromatography (GPC),1H-nuclear magnetic resonance (1H NMR), Fourier transform infrared spectrometer (FTIR). The results showed that the polystyrene-b-poly (methyl methacrylate) could be synthesised with JWEB50. The transmission electron microscope (TEM) analysis showed that the polymer could be used as the compatilizer to improve the compatibility of PS/PMMA blends.关键词
多官能度引发剂/聚苯乙烯/聚甲基丙烯酸甲酯/嵌段共聚物Key words
multifunctional initiator/ polystyrene/ poly( methyl methacrylate) / block copolymer分类
化学化工引用本文复制引用
陈小祥,单国荣..四官能度过氧化物JWEB50引发的PS-b-PMMA合成与表征[J].化工学报,2012,63(8):2667-2671,5.
