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Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix
Wang, Wei; Jin, Ying; Su, Zhaohui1
2009-12-03
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
ISSN1520-6106
Volume113Issue:48Pages:15742-15746
AbstractThe 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.
DOI10.1021/jp906718t
Indexed BySCI
Language英语
WOS IDWOS:000272037800006
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67730
Collection中国科学院化学研究所
Corresponding AuthorSu, Zhaohui
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wei,Jin, Ying,Su, Zhaohui. 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, Wei,Jin, Ying,&Su, Zhaohui.(2009).Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix.JOURNAL OF PHYSICAL CHEMISTRY B,113(48),15742-15746.
MLA Wang, Wei,et al."Spectroscopic Study on Water Diffusion in Poly(ester urethane) Block Copolymer Matrix".JOURNAL OF PHYSICAL CHEMISTRY B 113.48(2009):15742-15746.
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