Bhat, S.D. and Manokaran, A. and Sahu, A.K. and Pitchumani, S. and Sridhar, P. and Shukla, A.K. (2009) Novel Self-Supported Natural and Synthetic Polymer Membranes for Air Humidification. Journal ofAppliedPolymer Science, 113 (4). pp. 2605-2612.

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Abstract

Novel self-supported natural and synthetic polymer membranes of chitosan-hydroxy ethyl cellulosemontmorillonite (CS-HEC-MMT) and polyvinyl alcohol (PVA)-polystyrene sulfonic acid (PSSA) are prepared by solution casting method followed by crosslinking. These membranes are employed for air humidification at varying temperatures between 30C and 70C and their performances are compared with commercial Nafion VR membranes. High water fluxes with desired humidified-air output have been achieved for CS-HEC-MMT and PVA-PSSA hybrid membranes at air-flow rates of 1–10 slpm. Variation in the air/water mixing ratio, dew point, and relative humidity that ultimately results in desired water flux with respect to air-flow rates are also quantified for all the membranes. Water flux values for CS-HEC-MMT are less than those for Nafion VR and PVA-PSSA membranes, but the operational stability of CS-HEC-MMT membrane is higher than PVAPSSA and comparable with Nafion VR both of which can operate up to 70C at repetitive cycles of humidification.

Item Type:	Article
Uncontrolled Keywords:	water flux; hybrid membrane; sorption; PEFC
Subjects:	Fuel Cells
Divisions:	UNSPECIFIED
Depositing User:	TTBD CECRI
Date Deposited:	08 Apr 2012 14:54
Last Modified:	08 Apr 2012 14:54
URI:	http://cecri.csircentral.net/id/eprint/409

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