期刊
DESALINATION
卷 257, 期 1-3, 页码 117-123出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2010.02.036
关键词
Thermally induced phase separation; Hollow fiber membrane; Poly(vinyl butyral); Polyethylene glycol; Hydrophilic membrane
资金
- National Natural Science Foundation of China [20776161]
Hydrophilic poly(vinyl butyral) (PVB) microporous hollow fiber membranes were prepared via thermally induced phase separation (TIPS), polyethylene glycol with molecular weight 200(PEG200) was used as diluent. The phase diagram of PVB/PEG200 system indicated L-L phase separation. The effects of preparation condition such as take-up speed, bore liquid flow rate, air-gap, and water bath temperature on the properties of the membrane were investigated. The results showed that PVB hollow fiber membrane prepared at airgap 5 mm had a little greater tensile strength, breaking strength and elongation than those prepared at airgap zero, and the former had a little greater rejection but smaller water permeate. The increase of the takeup speed led to the decrease of inner diameters and thickness, the increase of the bore liquid flow rate led to the increase of inner diameter and outer diameter, but the decrease of thickness. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
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