Synthesis of Gradient Copolysiloxanes by Simultaneous Copolymerization of Cyclotrisiloxanes and Mechanism for Kinetics Inverse Between Anionic and Cationic Ring-Opening Polymerization

	Synthesis of Gradient Copolysiloxanes by Simultaneous Copolymerization of Cyclotrisiloxanes and Mechanism for Kinetics Inverse Between Anionic and Cationic Ring-Opening Polymerization
	Fei, Hua-Feng 1,2; Han, Xiaojie 1,2; Liu, Bozheng 1,2; Gao, Xiyin 1; Wang, Qian 1; Zhang, Zhijie 1; Xie, Zemin 1
刊名	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
	2016-03-15
卷号	54 期号:6 页码:835-843
关键词	gradient copolymer kinetics analysis mechanism polysiloxane reactivity ratio ring-opening polymerization
英文摘要	Trifluoropropylmethylsiloxane-phenylmethylsiloxane gradient copolysiloxanes were synthesized by anionic and cationic ring-opening polymerization (ROP) of 1,3,5-tris(trifluoropropylmethyl) cyclotrisiloxane (D-3(F)) and phenylmethylcyclotrisiloxane (D-3(Ph)). The analysis of reactivity ratios revealed that the reactivity of D-3(F) toward anionic ROP was higher than that of D-3(Ph); however, D-3(F) exhibited lower reactivity compared with D-3(Ph) during the cationic ROP. AB and BAB type gradient copolymers were obtained because of a difference in the reactivity of the monomers. The microstructure of copolymers was character-ized by Si-29 NMR spectroscopy, gel permeation chromatography, and differential scanning calorimetry. Furthermore, the mechanism for kinetics inverse of copolymerization was proposed based on the results of the optimized molecular configuration. (C) 2015 Wiley Periodicals, Inc.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35803]
专题	化学研究所_高技术材料实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Fei, Hua-Feng,Han, Xiaojie,Liu, Bozheng,et al. Synthesis of Gradient Copolysiloxanes by Simultaneous Copolymerization of Cyclotrisiloxanes and Mechanism for Kinetics Inverse Between Anionic and Cationic Ring-Opening Polymerization[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2016,54(6):835-843.
APA	Fei, Hua-Feng.,Han, Xiaojie.,Liu, Bozheng.,Gao, Xiyin.,Wang, Qian.,...&Xie, Zemin.(2016).Synthesis of Gradient Copolysiloxanes by Simultaneous Copolymerization of Cyclotrisiloxanes and Mechanism for Kinetics Inverse Between Anionic and Cationic Ring-Opening Polymerization.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,54(6),835-843.
MLA	Fei, Hua-Feng,et al."Synthesis of Gradient Copolysiloxanes by Simultaneous Copolymerization of Cyclotrisiloxanes and Mechanism for Kinetics Inverse Between Anionic and Cationic Ring-Opening Polymerization".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 54.6(2016):835-843.