中文摘要：

本文从聚合机理和反应动力学两方面综述了近年来六甲基环三硅氧烷（D3）的阴离子开环聚合研究进展。早期Frye等提出在非极性的碳氢溶剂中会形成引发剂的三种加成物质,在不加入促进剂的情况下不会进行D3的开环聚合,这一开环聚合机理成为随后D3阴离子开环聚合机理研究的基础,研究者采用MALDI-TOF研究聚合机理得到的结论证实了这一机理的正确性,促进剂、溶剂、引发剂的类型和聚合步骤会改变活性链末端的缔合和解缔合的平衡能力,对D3开环过程中的反咬和再分布副反应有显著影响。D3开环聚合增长速率对单体浓度为一级,不同的促进剂和引发剂会显著改变活性链末端的缔合能力,从而显著影响聚合动力学。

英文摘要：

The advantages in the living anionic polymerization of hexamethylcyclotrisiloxane（D3） in terms of polymerization mechanism and dynamics are summarized.Frye suggested that three kinds of initiation compounds were formed in hydrocarbon solvents and no polymerization proceeded without promotor.The mechanism proposed by Frye is accepted by follower and validated by some researches based on MALDI-TOF technology.During the polymerization,promotors,solvents,initiators and process can change the equilibrium between the association and disassociation of living chains,which can effect the＂back-biting＂and redistribution side reaction in anionic ring opening polymerization of D3.First-order kinetics is obtained in monomer concentration.Promotors and initiators change the association ability of living chain end,also the polymerization dynamics.