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Pervaporation of Water–dye, Alcohol–dye, and Water–alcohol Mixtures Using a Polyphosphazene Membrane by Christopher J. Orme; Mason K. Harrup; John D. McCoy; Donald H. Weinkauf; Frederick F. Stewart is a Engineering article available to read on EtoBox.

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A novel phosphazene heteropolymer (HPP) was synthesized that contained three differing pendant groups: 2-(2-methoxyethoxy)ethanol (MEE), 4-methoxyphenol, and 2-allylphenol. The resulting polymer is an amorphous elastomer with good film forming properties where MEE and 4-methoxyphenol pendant groups influenced the hydrophilicity and the solvent compatibility of the polymer. Sorption studies were performed to characterize the polymer in terms of Hansen solubility parameters. Additionally, group contributions were used to predict the Hansen parameters for the polymer and these data compared favorably with the observed solubility behavior with 15 solvents that ranged from hydrocarbons to water. Homopolymers synthesized from MEE and 4-methoxyphenol were also studied for solubility revealing different behaviors with each representing a limit in hydrophilicity; MEE formed a water-soluble hydrophilic polymer and 4-methoxyphenol yielded a hydrophobic polymer. Membranes formed from HPP were characterized for use as pervaporation membranse using five different feeds: water-dye, methanol-dye, 2-propanol-dye, water-2-propanol, and water-methanol. Fluxes of methanol and isopropanol were greater

Who reads Pervaporation of Water–dye, Alcohol–dye, and Water–alcohol Mixtures Using a Polyphosphazene Membrane?

Author

Christopher J. Orme; Mason K. Harrup; John D. McCoy; Donald H. Weinkauf; Frederick F. Stewart

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0376-7388)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)