Please use this identifier to cite or link to this item: https://doi.org/10.1021/ie1007085
Title: Formation of cellulose acetate membranes via phase inversion using ionic liquid, [BMIM]SCN, As the solvent
Authors: Xing, D.Y.
Peng, N. 
Chung, T.-S. 
Issue Date: 15-Sep-2010
Source: Xing, D.Y., Peng, N., Chung, T.-S. (2010-09-15). Formation of cellulose acetate membranes via phase inversion using ionic liquid, [BMIM]SCN, As the solvent. Industrial and Engineering Chemistry Research 49 (18) : 8761-8769. ScholarBank@NUS Repository. https://doi.org/10.1021/ie1007085
Abstract: Ionic liquids have gained worldwide attention as green solvents in the past decade. This study explores, for the first time, the fundamental science and engineering of using ionic liquids as a new generation of solvents to replace traditional organic solvents for the fabrication of flat sheet membranes and hollow fiber membranes. The fundamentals and characteristics of membrane formation of cellulose acetate (CA) membranes have been investigated using 1-butyl-3-methylimidazolium thiocyanate ([BMIM]SCN) as the solvent via phase inversion in water. For elucidation, other solvents, i.e., N-methyl-2- pyrrolidinone (NMP) and acetone, were also studied. It is found that [BMIM]SCN has distinctive effects on phase inversion process and membrane morphology compared to NMP and acetone because of its unique nature of high viscosity and the high ratio of [BMIM]SCN outflow to water inflow. Membranes cast or spun from CA/[BMIM]SCN have a macrovoid-free dense structure full of nodules, implying the paths of phase inversion are mainly nucleation growth and gelation, followed possibly by spinodal decomposition. The recovery and reuse of [BMIM]SCN have also been demonstrated and achieved. The derived flat sheet membranes made from the recovered [BMIM]SCN show morphological and performance characteristics similar to those from the fresh [BMIM]SCN. It is believed that this study could enrich the understanding of membrane formation using environmentally benign ionic liquids. © 2010 American Chemical Society.
Source Title: Industrial and Engineering Chemistry Research
URI: http://scholarbank.nus.edu.sg/handle/10635/63944
ISSN: 08885885
DOI: 10.1021/ie1007085
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

37
checked on Dec 14, 2017

WEB OF SCIENCETM
Citations

35
checked on Nov 17, 2017

Page view(s)

58
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.