Morphology and linear rheology of comb-like copolymer melts with high grafting density: II. Heterografted PVSt-g-(PS/PE) comb-like copolymer with short backbone and mixed side chains

doi:10.1016/j.polymer.2018.01.023

CORC > 化学研究所 > 中国科学院化学研究所

	Morphology and linear rheology of comb-like copolymer melts with high grafting density: II. Heterografted PVSt-g-(PS/PE) comb-like copolymer with short backbone and mixed side chains
	Lin, Yichao 1,2; Zhang, Shaofeng 1,3; Ye, Lin 1,4; Gu, Yang 1,3; Wang, Yanhui 1; Ma, Li 1; Tang, Tao 1
刊名	POLYMER
	2018-02-14
卷号	137 页码:222-230
关键词	Comb-like Copolymer Microphase-separated Structure Linear Rheological Behavior
ISSN号	0032-3861
DOI	10.1016/j.polymer.2018.01.023
英文摘要	A series of heterografted PVSt-g-(PS/PE) based on polystyrene (PS) backbone with mixed PS and polyethylene (PE) side chains was obtained, in which the branching density of PVSt-g-(PS/PE) was above 72%. Because of the extremely short backbone, long side chains and high branching density in these comb-like copolymers, the topological structure of PVSt-g-(PS/PE) was similar to asymmetrical star copolymers. By adjusting the molar ratio of PS and PE side chains, the total PS (PVSt backbone + side chain PS) volume fraction in the graft copolymers could be adjusted. PVSt-g-(PS/PE) showed a microphase-separated structure at the melt state, depending on the composition of the copolymers. When the volume fraction of PS changed from 42.7% to 76.9%, the microphase-separated structures changed from lamellar phase structure to cylindrical morphology. Furthermore, all the PVSt-g-(PS/PE) samples with the microphase-separated structure showed a typical rheological behavior of cross-linked network-like structure, but the change trend of melt elasticity of the copolymer with increasing temperature depended on the microphase-separated structure. (C) 2018 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000425603800023
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45647]
专题	中国科学院化学研究所
通讯作者	Ma, Li; Tang, Tao
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore 3.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lin, Yichao,Zhang, Shaofeng,Ye, Lin,et al. Morphology and linear rheology of comb-like copolymer melts with high grafting density: II. Heterografted PVSt-g-(PS/PE) comb-like copolymer with short backbone and mixed side chains[J]. POLYMER,2018,137:222-230.
APA	Lin, Yichao.,Zhang, Shaofeng.,Ye, Lin.,Gu, Yang.,Wang, Yanhui.,...&Tang, Tao.(2018).Morphology and linear rheology of comb-like copolymer melts with high grafting density: II. Heterografted PVSt-g-(PS/PE) comb-like copolymer with short backbone and mixed side chains.POLYMER,137,222-230.
MLA	Lin, Yichao,et al."Morphology and linear rheology of comb-like copolymer melts with high grafting density: II. Heterografted PVSt-g-(PS/PE) comb-like copolymer with short backbone and mixed side chains".POLYMER 137(2018):222-230.