Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix

	Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix
	Wang W ; Jin Y ; Su ZH
刊名	journal of physical chemistry b
	2009
卷号	113 期号:48 页码:15742-15746
关键词	SHAPE-MEMORY POLYMERS EVANESCENT-WAVE SPECTROSCOPY THERMOMECHANICAL PROPERTIES REFLECTION SPECTROSCOPY TRANSPORT-PROPERTIES FTIR-ATR POLYURETHANE FILMS EPOXY MOISTURE
ISSN号	1520-6106
通讯作者	su zh
中文摘要	the diffusion of water in a phase-separated biodegradable poly(ester urethane) shape-memory polymer with poly(e-caprolactone) (pcl) as the soft segment was investigated using time-resolved ftir-atr. on the basis of the band fitting and water ordering in drawn films, the broad water band in the 3800-2800 cm(-1) region was decomposed into four bands located at 3620, 3510, 3400, and 3260 cm(-1), and the first two components at 3620 and 35 10 cm(-1) were assigned to the vibrations of antisymmetric and symmetric stretching of water hydrogen bonded with the c=o group of the soft segment. the other two were associated with water bonded to the urethane hard segments in the forms of n-h:o-h:o=c bridge hydrogen bond and double hydrogen bonds with two c=o groups, respectively. furthermore, band fitting and two-dimensional correlation analyses revealed that in the diffusion process, water first diffuses into the continuous soft-rich pcl phase and then into the hard-rich urethane domains, forming double hydrogen bonds with two c=o groups prior to the bridge hydrogen bond in the form of n-h:o-h:o=c.
收录类别	SCI
语种	英语
WOS记录号	WOS:000272037800006
公开日期	2010-05-27
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/12353]
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	Wang W,Jin Y,Su ZH. Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix[J]. journal of physical chemistry b,2009,113(48):15742-15746.
APA	Wang W,Jin Y,&Su ZH.(2009).Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix.journal of physical chemistry b,113(48),15742-15746.
MLA	Wang W,et al."Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix".journal of physical chemistry b 113.48(2009):15742-15746.