Synthesis and stabilization of high-molecular-weight poly(propylene carbonate) from Zn-Co-based double metal cyanide catalyst

	Synthesis and stabilization of high-molecular-weight poly(propylene carbonate) from Zn-Co-based double metal cyanide catalyst
	Li ZF ; Qin YS ; Zhao XJ ; Wang FS ; Zhang SB ; Wang XH
刊名	european polymer journal
	2011
卷号	47 期号:11 页码:2152-2157
关键词	DIIMINATE ZINC CATALYSTS DIHYDRIC PHENOL SYSTEM PROPYLENE-OXIDE ALTERNATING COPOLYMERIZATION CO2/EPOXIDE COPOLYMERIZATION POLYCARBONATE SYNTHESIS COORDINATION CATALYST LIVING POLYMERIZATION CHEMISTRY RELEVANT ALUMINUM PORPHYRIN
ISSN号	0014-3057
通讯作者	wang xh
中文摘要	high-molecular-weight poly(propylene carbonate) (ppc) was synthesized using a zn-co-based double metal cyanide (co-dmc) catalyst. the catalytic activity reached as high as 60.6 kg polymer/g co-dmc after 10 h when the low-molecular-weight polyether polyol initiator was not used. in contrast, production of the by-product propylene carbonate (pc) significantly decreased to below 1.0 wt%. considering the carbonate content in the alternative copolymer as 100%, the carbonate content of the obtained ppc ranged between 34% and 49%. the carbonate content was highly important for the air stability of ppc. the number average molecular weight of the as-polymerized ppc with a carbonate content of 48% reached 130 kg/mol. however, it decreased to ca. 60 kg/mol after 24 h of storage at 70 c, and further dropped to ca. 40 kg/mol after 7 d. this result confirmed that severe oxidative degradation occurred for the low-carbonate-content ppc. air stability significantly improved by adding antioxidant 1010 (tetrakisl methylene(3,5-di-(tert-butyl)-4-hydroxy-hydro cinnamate)] methane). similarly, a more air stable ppc was also prepared by raising its carbonate content. our work provided a new explanation on the wide existence of low-molecular-weight ppc in dmc catalyst literature. strategies for obtaining high-molecular-weight ppc were also disclosed. (c) 2011 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000297449600012
公开日期	2012-06-08
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44249]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li ZF,Qin YS,Zhao XJ,et al. Synthesis and stabilization of high-molecular-weight poly(propylene carbonate) from Zn-Co-based double metal cyanide catalyst[J]. european polymer journal,2011,47(11):2152-2157.
APA	Li ZF,Qin YS,Zhao XJ,Wang FS,Zhang SB,&Wang XH.(2011).Synthesis and stabilization of high-molecular-weight poly(propylene carbonate) from Zn-Co-based double metal cyanide catalyst.european polymer journal,47(11),2152-2157.
MLA	Li ZF,et al."Synthesis and stabilization of high-molecular-weight poly(propylene carbonate) from Zn-Co-based double metal cyanide catalyst".european polymer journal 47.11(2011):2152-2157.