DOI: 10.1016/j.jcou.2016.06.011
Scopus记录号: 2-s2.0-84978038776
论文题名: Copolymerization of CO2 and propylene oxide using ZnGA/DMC composite catalyst for high molecular weight poly(propylene carbonate)
作者: Meng Q. ; Cheng R. ; Li J. ; Wang T. ; Liu B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 86
结束页码: 96
语种: 英语
英文关键词: Carbon dioxide
; Composite catalyst
; Copolymerization
; Synergistic effects
; ZnGA/DMC
Scopus关键词: Carbon dioxide
; Catalysts
; Copolymerization
; Crystalline materials
; Glass transition
; Molecular weight
; Nonionic surfactants
; Propylene
; Composite catalysts
; Decomposition temperature
; High-glass transition temperatures
; Optimized reaction conditions
; Poly(propylene carbonate)
; Synergistic effect
; Synergistic mechanism
; ZnGA/DMC
; Catalyst selectivity
英文摘要: The high yield and high molecular weight poly(propylene carbonate) (PPC) was synthesized via copolymerization of propylene oxide (PO) and carbon dioxide (CO2) catalyzed over zinc glutarate/double metal cyanide (ZnGA/DMC) composite catalyst. A fine crystalline ZnGA component was prepared using the crosslinked restrain effect of nonionic surfactant. Combined with a small amount of DMC, the ZnGA/DMC (molar ratio = 10:1) composite catalyst system showed an excellent synergistic effect on CO2/PO copolymerization with higher activity, selectivity, and shorter reaction time than those of the traditional ZnGA catalyst. Under the optimized reaction conditions, the molecular weight of PPC was up to 3.8 × 105 g/mol at the highest yield of 508.0 gpolym/gcat, and the selectivity was over 97.7% towards polycarbonates rather than polyether linkages. The alternating copolymer PPC exhibited good thermostability, high glass transition temperature (42.0 °C) and high decomposition temperature (5% weight loss at 253.4 °C). A synergistic mechanism of ZnGA/DMC composite catalyst was speculated. © 2016 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52863
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Meng Q.,Cheng R.,Li J.,et al. Copolymerization of CO2 and propylene oxide using ZnGA/DMC composite catalyst for high molecular weight poly(propylene carbonate)[J]. Journal of CO2 Utilization,2016-01-01,16