New effort to synthesize star isotactic polypropylene

doi:10.1039/c8py00318a

CORC > 化学研究所 > 中国科学院化学研究所

	New effort to synthesize star isotactic polypropylene
	Liu, Xinzhi 1; Niu, Hui 1; Li, Yang 1; Dong, Jin-Yong 2,3
刊名	POLYMER CHEMISTRY
	2018-06-28
卷号	9 期号:24 页码:3347-3354
ISSN号	1759-9954
DOI	10.1039/c8py00318a
英文摘要	This study demonstrates an efficient arm-first approach for the synthesis of star isotactic polypropylene (iPP) via two steps. In the first step iPP "arm" containing a methoxysilane-terminal end was prepared via a designed chain-capping reaction in propylene polymerization, and in the second step an acid-catalyzed intermolecular elimination reaction was carried out between methoxysilane groups at these "arm-ends", finally giving star polymers with iPP as the arm and Si-O-Si cross-linking structure as the core. Moreover, the arm number could be tailored from 3 to 8 by adjusting the star-forming (cross-linking) reaction time. The chemical structures of "arm" and star polymers were monitored by H-1-NMR, and the star-topological structure evolution was investigated via gel permeation chromatography incorporating a light scattering detector (GPC-LS). The star polymers' absolute molecular weights as well as their dilute solution properties including the intrinsic viscosity ([eta]) and the Mark-Houwink exponent (a) were determined by GPC-LS, confirming the successful synthesis of star iPPs.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000435667000004
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42559]
专题	中国科学院化学研究所
通讯作者	Niu, Hui
作者单位	1.Dalian Univ Technol, Sch Chem Engn, Dept Polymer Sci & Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xinzhi,Niu, Hui,Li, Yang,et al. New effort to synthesize star isotactic polypropylene[J]. POLYMER CHEMISTRY,2018,9(24):3347-3354.
APA	Liu, Xinzhi,Niu, Hui,Li, Yang,&Dong, Jin-Yong.(2018).New effort to synthesize star isotactic polypropylene.POLYMER CHEMISTRY,9(24),3347-3354.
MLA	Liu, Xinzhi,et al."New effort to synthesize star isotactic polypropylene".POLYMER CHEMISTRY 9.24(2018):3347-3354.