K. Manjula, Siddaramaiah
Jun 10, 2010
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0
Influential Citations
9
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Journal
Journal of Chemical & Engineering Data
Abstract
3-Carboxy-3-hydroxy pentanedioic acid (otherwise known as citric acid, CA) and (Z)-butenedioic acid (otherwise known as maleic acid, MA) based chain extended polyurethane (CEPU) membranes have been prepared using castor oil and hexamethylene diisocyanate (HDI). The molecular transport of a series of organic probe molecules through CEPU membranes had been studied in the temperature range (298 to 333) K using the sorption-gravimetric method. The coefficients of sorption S, diffusion D, and permeation P have been calculated for CEPU-aromatic penetrants. The sorption and diffusion results measured at different temperatures, namely, (298 to 333) K, are found to follow Ficks Law. The transport data are affected by the nature of the interacting probe molecule rather than its size and also by the structural variations of the polymer membrane. It was found that the penetrant of the comparable solubility parameter with CEPU interact more and thus there is an increase in sorption. In all of the liquid penetrants, th...