ICCAS OpenIR
Spectroscopic study on water diffusion in aromatic polyamide thin film
Jin, Ying; Wang, Wei; Su, Zhaohui
2011-09-01
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume379Issue:1-2Pages:121-130
AbstractA clear understanding of water diffusion mechanism is crucial for the design of efficient thin film composite (TFC) membranes for reverse osmosis. In this work, water absorption and desorption processes in poly(metaphenylene trimesamide) (MPTA). the active layer of TFC membranes, have been investigated by FTIR Three different states of water molecules in the film were identified. The spectral data were assessed using 2D correlation analysis, and the sequence of the interactions in the absorption and desorption processes between water and the polymer matrix was determined. The moderately strong bound water hydrogen bonded with -C=O and -NH- occurs first. Then water diffuses into free volume (microvoids), exhibiting weak hydrogen bonding interactions, as well as forms strong hydrogen bonds between the polyamide and water molecules. The process of water desorption is just the opposite in terms of the interaction sequence. Furthermore, it was found that a higher carboxyl content in the MPTA film results in a higher water flux. (C) 2011 Elsevier BM. All rights reserved.
KeywordWater Diffusion Reverse Osmosis Membrane Polyamides Ftir
DOI10.1016/j.memsci.2011.05.055
Indexed BySCI
Language英语
WOS IDWOS:000294076700012
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73436
Collection中国科学院化学研究所
Corresponding AuthorSu, Zhaohui
AffiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Jin, Ying,Wang, Wei,Su, Zhaohui. Spectroscopic study on water diffusion in aromatic polyamide thin film[J]. JOURNAL OF MEMBRANE SCIENCE,2011,379(1-2):121-130.
APA Jin, Ying,Wang, Wei,&Su, Zhaohui.(2011).Spectroscopic study on water diffusion in aromatic polyamide thin film.JOURNAL OF MEMBRANE SCIENCE,379(1-2),121-130.
MLA Jin, Ying,et al."Spectroscopic study on water diffusion in aromatic polyamide thin film".JOURNAL OF MEMBRANE SCIENCE 379.1-2(2011):121-130.
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