Multiblock copolymers composed of poly(butylene succinate) and poly (1,2-propylene succinate): Effect of molar ratio of diisocyanate to polyester-diols on crosslink densities, thermal properties, mechanical properties and biodegradability

doi:10.1016/j.polymdegradstab.2010.05.016

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	Multiblock copolymers composed of poly(butylene succinate) and poly (1,2-propylene succinate): Effect of molar ratio of diisocyanate to polyester-diols on crosslink densities, thermal properties, mechanical properties and biodegradability
	Zheng, Liuchun 1,2; Li, Chuncheng 1; Zhang, Dong 1; Guan, Guohu 1; Xiao, Yaonan 1; Wang, Dujin 1
刊名	POLYMER DEGRADATION AND STABILITY
	2010-09-01
卷号	95 期号:9 页码:1743-1750
关键词	Crosslink Density Poly(Butylene Succinate) Mechanical Properties Biodegradation
ISSN号	0141-3910
DOI	10.1016/j.polymdegradstab.2010.05.016
英文摘要	In order to study the relationship between structure and properties, multiblock copolymers composed of poly(butylene succinate) (PBS) and poly (1,2-propylene succinate) (PPSu) have been synthesized by chain-extension at various molar ratios of hexamethylene diisocyanate (HDI) to polyester-diols, which have been abbreviated as R-values in this paper. Molecular weights of soluble fractions, gel fractions and crosslink densities have been determined. Thermal properties, mechanical properties and biodegradability have been studied and correlated with R-values. Crystallization of copolymers becomes difficult with increasing R-value. Tensile strength, flexural strength and flexural modulus tend to increase with increasing R-value up to 1.2, and vary little when R-value increases from 1.2 to 1.3, then decrease with further increase in R-value. Impact strength achieves a maximum value at R-value of 1.3. Biodegradation rate reaches a minimum value when R-value is 1.1. Biodegradation has been studied systematically by attenuated total reflectance Fourier transform infrared (ATR-FTIR), (1)H, NMR and SEM. (C) 2010 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000281369500039
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/71023]
专题	中国科学院化学研究所
通讯作者	Li, Chuncheng
作者单位	1.Chinese Acad Sci ICCAS, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Liuchun,Li, Chuncheng,Zhang, Dong,et al. Multiblock copolymers composed of poly(butylene succinate) and poly (1,2-propylene succinate): Effect of molar ratio of diisocyanate to polyester-diols on crosslink densities, thermal properties, mechanical properties and biodegradability[J]. POLYMER DEGRADATION AND STABILITY,2010,95(9):1743-1750.
APA	Zheng, Liuchun,Li, Chuncheng,Zhang, Dong,Guan, Guohu,Xiao, Yaonan,&Wang, Dujin.(2010).Multiblock copolymers composed of poly(butylene succinate) and poly (1,2-propylene succinate): Effect of molar ratio of diisocyanate to polyester-diols on crosslink densities, thermal properties, mechanical properties and biodegradability.POLYMER DEGRADATION AND STABILITY,95(9),1743-1750.
MLA	Zheng, Liuchun,et al."Multiblock copolymers composed of poly(butylene succinate) and poly (1,2-propylene succinate): Effect of molar ratio of diisocyanate to polyester-diols on crosslink densities, thermal properties, mechanical properties and biodegradability".POLYMER DEGRADATION AND STABILITY 95.9(2010):1743-1750.