Microstructure Analysis of a CO<sub>2</sub>Copolymer from Styrene Oxide at the Diad Level
作者:Guang-Peng Wu、Yu-Ping Zu、Peng-Xiang Xu、Wei-Min Ren、Xiao-Bing Lu
DOI:10.1002/asia.201300115
日期:2013.8
Moreover, the microstructures of CO2 copolymers from propylene oxide and cyclohexene oxide have also been well‐studied. However, the microstructure of the CO2 copolymer from styrene oxide (SO), an epoxide that contains an electron‐withdrawing group, has not yet been investigated. Herein, we focus on the spectroscopic assignment of the CO2 copolymer from styrene oxide at the diad level by using three
关于CO 2与末端环氧化物的交替共聚的大量有趣信息,例如环氧化物的开环区域化学和聚合物链中碳酸酯单元序列的立体化学,已经得到报道。此外,对环氧丙烷和环己烯氧化物制得的CO 2共聚物的微观结构也进行了深入研究。但是,尚未研究由环氧乙烷(SO 2)(一种包含吸电子基团的环氧化物)制成的CO 2共聚物的微观结构。在本文中,我们重点介绍了使用三种模型二聚体化合物TT,在二元组水平上苯乙烯氧化物的CO 2共聚物的光谱归属。HT和HH。通过比较羰基区域中的信号,我们得出结论,聚碳酸苯乙烯的13 C NMR光谱中δ = 154.3、153.8和153.3 ppm的信号归因于尾对尾,头对尾,和头对头碳酸盐键。此外,基于TT,HT和HH(二聚体(R,R)-TT,(S,S)-TT和(R,S)-TT ; (R,R)-HT的各种等规和间规模型化合物,(S,S)-HT和(R,S)-HT ; (R,R)-HH,(S,