DESIGN AND SYNTHESIS OF POLYPROPYLENE-b-POLYPHOSPHATE BLOCK COPOLYMERS

doi:10.3724/SP.J.1105.2013.12273

CORC > 化学研究所 > 中国科学院化学研究所

	DESIGN AND SYNTHESIS OF POLYPROPYLENE-b-POLYPHOSPHATE BLOCK COPOLYMERS
	Wang, Hong-zhen 1,2; Qin, Ya-wei 1; Dong, Jin-yong 1
刊名	ACTA POLYMERICA SINICA
	2013-04-20
期号	4 页码:518-525
关键词	Polypropylene Polyphosphate Atrp Block Copolymer Flame Retardancy
ISSN号	1000-3304
DOI	10.3724/SP.J.1105.2013.12273
英文摘要	Novel phosphorus-containing polypropylene diblock copolymers were synthesized and their thermal decomposing behaviors and flammability were characterized by thermo-gravimetric analysis (TGA) and microscale combustion calorimetry (MCC). First, a reactive polypropylene precursor with a terminal styryl group (PP-t-St) at polymer chain end was synthesized via controlled chain transfer reaction to 1,4-divinylbenzene and hydrogen in metallocene-mediated propylene polymerization. Then PP-t-St was reacted with hydrogen bromide through Markovnikov addition in a quasi-quantitative manner, affording 1-bromoethylbenzene group-terminated polypropylene (PP-t-BzBr). ATRP of phosphorous-containing vinyl monomer such as diethyl-(4-vinylbenzyl) phosphonate (DEVBP) was carried out in toluene at elevated temperatures with PP-t-BzBr suspending in the reactant solution, with CuCl/1,1,4,7,10,10-hexamethyltriethylenetetramine (HMTETA) as catalyst. Diblock copolymers containing different amounts of DEVBP units (up to 64. 3 wt%) were obtained by adjusting polymerization durations. Differential scanning calorimetry (DSC) experiments indicated that both the crystallinity and crystallization rate of PP were largely retained in PP-b-PDEVBP diblock copolymers. TGA and MCC results showed that char residues increased while heat release rates reduced upon forming the diblock copolymers as compared to the precursory PP-t-BzBr as well as PP-t-St. Overall, this research may lead to a new solution to inherently flame-retardant polypropylene.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000318197100014
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/53745]
专题	中国科学院化学研究所
通讯作者	Wang, Hong-zhen
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Beijing Univ, Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hong-zhen,Qin, Ya-wei,Dong, Jin-yong. DESIGN AND SYNTHESIS OF POLYPROPYLENE-b-POLYPHOSPHATE BLOCK COPOLYMERS[J]. ACTA POLYMERICA SINICA,2013(4):518-525.
APA	Wang, Hong-zhen,Qin, Ya-wei,&Dong, Jin-yong.(2013).DESIGN AND SYNTHESIS OF POLYPROPYLENE-b-POLYPHOSPHATE BLOCK COPOLYMERS.ACTA POLYMERICA SINICA(4),518-525.
MLA	Wang, Hong-zhen,et al."DESIGN AND SYNTHESIS OF POLYPROPYLENE-b-POLYPHOSPHATE BLOCK COPOLYMERS".ACTA POLYMERICA SINICA .4(2013):518-525.