以原子转移自由基偶联法合成了多臂星形聚合物S-PEO和星形杂臂共聚物PEO·PS。以傅立叶红外光谱(FT-IR)和核磁共振(^1H NMR)分析方法确定了产物的结构。以GPC分析测试了产物的分子量和分子量分布。GPC分析结果表明所得聚合物分子量增大,分子量分布窄,偶联反应效率可高达99%以上。
Some multi - arm poly( ethylene oxide) star polymers ( S - PEO) and miktoarm star ethylene oxide - styrene copolymers (PEO- PS)were synthesized by coupling reaction atom transfer radical polymerization (ATRP). Their structures were confirmed by Fourier Transform Infrared (FT- IR) spectra, proton nuclear resonance (^1H NMR) and gel permeation chromatograph (GPC) spectroscopy. The results of GPC spectroscopy showed that the average molecular weights of resulted polymers increased with the narrow polydispersities ( 〈 1.3) and the coupling efficiency reached up to 99%.