Effect of hygroscopic materials on water vapor permeation and dehumidification performance of poly(vinyl alcohol) membranes

Handle URI:
http://hdl.handle.net/10754/622804
Title:
Effect of hygroscopic materials on water vapor permeation and dehumidification performance of poly(vinyl alcohol) membranes
Authors:
Bui, T. D.; Wong, Y.; Thu, K.; Oh, S. J.; Kum Ja, M.; Ng, Kim Choon ( 0000-0003-3930-4127 ) ; Raisul, I.; Chua, K. J.
Abstract:
In this study, two hygroscopic materials, inorganic lithium chloride (LiCl) and organic triethylene glycol (TEG) were separately added to poly(vinyl alcohol) (PVA) to form blend membranes for air dehumidification. Water vapor permeation, dehumidification performance and long-term durability of the membranes were studied systematically. Membrane hydrophilicity and water vapor sorbability increased significantly with higher the hygroscopic material contents. Water vapor permeance of the membranes increased with both added hygroscopic material and absorbed water. Water permeation energy varied from positive to negative with higher hygroscopic content. This observation is attributed to a lower diffusion energy and a relatively constant sorption energy when hygroscopic content increases. Comparatively, PVA/TEG has less corrosive problems and is more environmentally friendly than PVA/LiCl. A membrane with PVA/TEG is observed to be highly durable and is suitable for dehumidification applications.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Bui TD, Wong Y, Thu K, Oh SJ, Kum Ja M, et al. (2017) Effect of hygroscopic materials on water vapor permeation and dehumidification performance of poly(vinyl alcohol) membranes. Journal of Applied Polymer Science 134. Available: http://dx.doi.org/10.1002/app.44765.
Publisher:
Wiley-Blackwell
Journal:
Journal of Applied Polymer Science
Issue Date:
16-Jan-2017
DOI:
10.1002/app.44765
Type:
Article
ISSN:
0021-8995
Sponsors:
The authors gratefully acknowledge the generous funding from (1) the National Research Foundation (NRF) Singapore under the Competitive Research Programme (CRP) Funding Scheme (R-265–000-466–281). We would also like to thank Weijie Seow for his invaluable contributions to this study.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/app.44765/full
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorBui, T. D.en
dc.contributor.authorWong, Y.en
dc.contributor.authorThu, K.en
dc.contributor.authorOh, S. J.en
dc.contributor.authorKum Ja, M.en
dc.contributor.authorNg, Kim Choonen
dc.contributor.authorRaisul, I.en
dc.contributor.authorChua, K. J.en
dc.date.accessioned2017-01-29T13:51:40Z-
dc.date.available2017-01-29T13:51:40Z-
dc.date.issued2017-01-16en
dc.identifier.citationBui TD, Wong Y, Thu K, Oh SJ, Kum Ja M, et al. (2017) Effect of hygroscopic materials on water vapor permeation and dehumidification performance of poly(vinyl alcohol) membranes. Journal of Applied Polymer Science 134. Available: http://dx.doi.org/10.1002/app.44765.en
dc.identifier.issn0021-8995en
dc.identifier.doi10.1002/app.44765en
dc.identifier.urihttp://hdl.handle.net/10754/622804-
dc.description.abstractIn this study, two hygroscopic materials, inorganic lithium chloride (LiCl) and organic triethylene glycol (TEG) were separately added to poly(vinyl alcohol) (PVA) to form blend membranes for air dehumidification. Water vapor permeation, dehumidification performance and long-term durability of the membranes were studied systematically. Membrane hydrophilicity and water vapor sorbability increased significantly with higher the hygroscopic material contents. Water vapor permeance of the membranes increased with both added hygroscopic material and absorbed water. Water permeation energy varied from positive to negative with higher hygroscopic content. This observation is attributed to a lower diffusion energy and a relatively constant sorption energy when hygroscopic content increases. Comparatively, PVA/TEG has less corrosive problems and is more environmentally friendly than PVA/LiCl. A membrane with PVA/TEG is observed to be highly durable and is suitable for dehumidification applications.en
dc.description.sponsorshipThe authors gratefully acknowledge the generous funding from (1) the National Research Foundation (NRF) Singapore under the Competitive Research Programme (CRP) Funding Scheme (R-265–000-466–281). We would also like to thank Weijie Seow for his invaluable contributions to this study.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/app.44765/fullen
dc.subjectAir dehumidificationen
dc.subjectHydrolic polymer membraneen
dc.subjectSolution diffusion mechanismen
dc.subjectVacuum membrane dehumidificationen
dc.subjectWater permeationen
dc.titleEffect of hygroscopic materials on water vapor permeation and dehumidification performance of poly(vinyl alcohol) membranesen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalJournal of Applied Polymer Scienceen
dc.contributor.institutionDepartment of Mechanical Engineering; National University of Singapore; 9 Engineering Drive 1 Singapore 117576 Singaporeen
dc.contributor.institutionKyushu University Program for Leading Graduate School, Green Asia Education Center Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-shi; Fukuoka 816-8580 Japanen
dc.contributor.institutionEngineering Science Programme, National University of Singapore, 5 Engineering Drive 2, Block E2-05-08; Singapore 117579 Singaporeen
kaust.authorNg, Kim Choonen
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