4-亚甲基-1,3-二氧环戊烷及其衍生物的自由基开环聚合反应(Ⅰ)——4-亚甲基-2-苯基-1,3-二氧环戊烷的聚合反应机理的研究

Free Radical Ring-Opening Polymerization of 4-Methylene-1,3-Dioxolane and It’s Derivatives (Ⅰ)——The Investigation of Polymerization Mechanism of 4-Methylene-2-Phenyl-1 ,3-Dioxolane

本文合成了4-亚甲基-2-苯基-1,3-二氧环戊烷单体,在引发剂DTBP、BPO和AIBN作用下进行自由基聚合反应。研究了聚合物的红外、核磁共振氢谱和碳谱,发现它是由结构单元Ⅳ、Ⅴ和Ⅵ组成的共聚物。据此,讨论了这一单体的聚合反应机_理。

This paper describes the synthesis of the monomer,4-methylene-2-phenyl-1 ,3-dioxolane. Unlike 4-methylene-1 ,3-dioxolane and it’s derivatives, it can be initiated by free radical initiators, such as DTBP, BPO and AIBN. Upon the investigation of JR, 1H NMR and 13C NMR spectra of the polymer, it is found that a copolymer with repeating units Ⅳ,Ⅴ and Ⅵ is obtained. Based on this study, the polymerization mechanism of the monomer is discussed.