Thermodynamics of Polyamide Separation Membrane in Contact With Aqueous Solutions

Zhang, Xijing

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Title:	Thermodynamics of Polyamide Separation Membrane in Contact With Aqueous Solutions
Author(s):	Zhang, Xijing
Doctoral Committee Chair(s):	Cahill, David G.
Department / Program:	Materials Science and Engineering
Discipline:	Materials Science and Engineering
Degree Granting Institution:	University of Illinois at Urbana-Champaign
Degree:	Ph.D.
Genre:	Dissertation
Subject(s):	Engineering, Materials Science
Abstract:	The absorption of water in reverse osmosis membranes FT30 and LF10 is investigated by a combination of measurements of water mass uptake and biaxial stress as a function of relative humidity. Water solubility in polyamide active layer is 12 wt% at a relative humidity of 95%. The slope of a water concentration versus humidity curve can be used to calculate inter-diffusivity of water in polyamide active layers. By combining the measurements of water mass uptake and biaxial stress, we estimate the specific volume of water in the active layers to be ∼ 30%.
Issue Date:	2008
Type:	Text
Language:	English
Description:	99 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.
URI:	http://hdl.handle.net/2142/82837
Other Identifier(s):	(MiAaPQ)AAI3347570
Date Available in IDEALS:	2015-09-25
Date Deposited:	2008