Controlling melt reactions during preparing long chain branched polypropylene using copper N,N-dimethyldithiocarbamate

doi:10.1016/j.polymer.2010.01.063

CORC > 化学研究所 > 中国科学院化学研究所

	Controlling melt reactions during preparing long chain branched polypropylene using copper N,N-dimethyldithiocarbamate
	Zhang, Zhenjiang 1,2; Xing, Haiping 1,2; Qiu, Jian 1; Jiang, Zhiwei 1,2; Yu, Haiou 1,2; Du, Xiaohua 1,2; Wang, Yanhui 1; Ma, Li 1; Tang, Tao 1
刊名	POLYMER
	2010-03-24
卷号	51 期号:7 页码:1593-1598
关键词	Long Chain Branch Melt Reaction Polypropylene
ISSN号	0032-3861
DOI	10.1016/j.polymer.2010.01.063
英文摘要	Effect of copper N,N-dimethyldithiocarbamate (CDD) on melt reactions during preparing long chain branched polypropylenes (LCB-PP) via free radical grafting was studied. The structure and theological properties of the modified PPs were characterized. The results showed that CDD could efficiently control two side reactions, i.e. degradation of PP backbone and homopolymerization of multifunctional monomer (trimethylol propane triacrylate (TMPTA)) in the presence of peroxide. Meanwhile the addition of CDD also increased the efficiency of forming LCB structure. The reaction between CDD and active free radicals (carbon centered and alkoxy species) led to forming in situ dithiocarbamate radicals, which cannot attack PP backbone and are weaker initiator for TMPTA. The resultant dithiocarbamate radicals could react with the PP macroradicals and the acrylic radicals reversibly, which prolong the life time of PP macroradical and increase the reaction probability between macroradicals. The obtained LCB-PP showed high melt strength. (C) 2010 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000276060400008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/69521]
专题	中国科学院化学研究所
通讯作者	Tang, Tao
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenjiang,Xing, Haiping,Qiu, Jian,et al. Controlling melt reactions during preparing long chain branched polypropylene using copper N,N-dimethyldithiocarbamate[J]. POLYMER,2010,51(7):1593-1598.
APA	Zhang, Zhenjiang.,Xing, Haiping.,Qiu, Jian.,Jiang, Zhiwei.,Yu, Haiou.,...&Tang, Tao.(2010).Controlling melt reactions during preparing long chain branched polypropylene using copper N,N-dimethyldithiocarbamate.POLYMER,51(7),1593-1598.
MLA	Zhang, Zhenjiang,et al."Controlling melt reactions during preparing long chain branched polypropylene using copper N,N-dimethyldithiocarbamate".POLYMER 51.7(2010):1593-1598.