环硅氧烷阴离子开环均聚及共聚研究进展  

Progress in Anionic Ring-opening Homo/Co-polymerization of Cyclosiloxanes

作　　者：夏爽 刘小兵[1] 赵娜 李玉全[1] 赵祺[1] 刘绍峰 李志波[2] Shuang Xia;Xiao-bing Liu;Na Zhao;Yu-quan Li;Qi Zhao;Shao-feng Liu;Zhi-bo Li(Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang621900;Key Laboratory of Biobased Polymer Materials,Shandong Provincial Education Department)

机构地区：[1]中国工程物理研究院化工材料研究所,绵阳621900 [2]青岛科技大学高分子科学与工程学院、山东省教育厅生物基高分子材料重点实验室,青岛266042

出　　处：《高分子学报》2018年第12期1482-1492,共11页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号51603197,21304081)资助项目

摘　　要：聚硅氧烷是一类典型的有机/无机杂化聚合物,具有耐高低温、优异的环境适应性等突出性能,在航空航天、国防科技等领域应用广泛.环硅氧烷单体阴离子开环聚合是制备不同链结构及功能化聚硅氧烷的重要途径,也是推动有机硅聚合物发展的重要研究领域之一.本文以阴离子开环聚合制备聚硅氧烷所涉及的环硅氧烷单体为线索,梳理了与不同化学结构环硅氧烷单体均聚及共聚相匹配的引发体系、聚合条件,以及聚合产物状态,并对相关研究工作做了论述介绍.此外,本文基于此线索对代表性研究体系做了简明罗列,便于高效检索及整体对比认知.As a class of typical organic/inorganic polymers,polysiloxanes are widely used in numerous areas owing to their remarkable properties,such as excellent environmental adaptability and endurance of wide temperature range.A broad spectrum of applications has been exploited for polysiloxanes,including surfactants, lubricants,adhesives,and insulating or coating materials.The overall properties of polysiloxanes are dependent primarily on its backbone.For example,poly(dimethylsiloxane)(PDMS),as a typical representative for polysiloxanes,shows special characteristics such as a low glass transition temperature,thermal stability, antioxidant stability,and physiological inertness.Anionic ring-opening polymerization of cyclosiloxanes is a prevalent approach to preparing polysiloxanes with various chain structures and functionalities and one of the most important areas for organosilicone research.Generally,the reaction processes of anionic ring-opening polymerizations are controllable in terms of a specific molecular weight,narrow molecular weight distributions, and well-defined structures.Besides,anionic ring-opening polymerization of cyclosiloxanes can be very useful in the preparation of new polymers with novel structures,particularly the microstructure-controlled copolymers that are difficult to be achieved by homopolymerization and conventional methods otherwise.Thus,anionic ring- opening polymerizations of cyclosiloxanes have received wide attention in the past decades.Focusing on cyclosiloxanes with different chemical structures used in anionic ring-opening polymerizations,this review elucidates the corresponding initiating agents,polymerization conditions,and final products involved in both homopolymerization and copolymerization processes.The covered topics regarding various monomers and initiating agents toward anionic ring-opening polymerizations of cyclosiloxanes will be of particular interest to organosilicon chemists as well as polymer and catalytic scientists who concern the precise control of the linear, branc

关 键 词：阴离子开环 环硅氧烷 聚硅氧烷 均聚 共聚 

分 类 号：O631.5[理学—高分子化学]