Transport of water and methanol vapors in alkyl substituted poly(norbornene)
- 30 April 2004
- journal article
- Published by Elsevier BV in Polymer
- Vol. 45 (8), 2641-2649
- https://doi.org/10.1016/j.polymer.2004.02.017
Abstract
This report examines the ability of aliphatic-substituted polynorbornenes to separate methanol vapor from water-wet air streams. Single component transport properties of water and methanol were measured for each candidate polymer at 30 °C. The diffusion coefficient, sorption coefficient, and permeability were determined by measuring the rate of mass gain or loss of a sample due to sorption or desorption. The ratio of the permeabilities of the pure components yielded the ideal selectivity. The materials studied in this were methyl-, nbutyl-, nhexyl-, and ndecyl-polynorbornene. These polymers were glassy, with Tgs of 150–380 °C, and have relatively high fractional free volumes (16–19%). The results of the study showed polynorbornenes were methanol selectivity with ideal selectivities of 1.2–9. This permeation selectivity is due primarily to the solubility selectivity of the materials.Keywords
This publication has 19 references indexed in Scilit:
- Sorption, diffusion and vapor permeation of various penetrants through dense poly(dimethylsiloxane) membranes: a transport analysisJournal of Membrane Science, 1994
- Sorption/desorption properties of ethanol, toluene, and xylene in poly(dimethylsiloxane) membranesJournal of Applied Polymer Science, 1994
- Membrane vapor separation. Recovery of vinyl chloride monomer from PVC reactor ventsIndustrial & Engineering Chemistry Research, 1993
- Separation of organic vapor from air by aromatic polyimide membranesJournal of Applied Polymer Science, 1991
- Membrane applications and research in the edible oil industry: An assessmentJournal of Oil & Fat Industries, 1990
- Removal of organic vapors from air by selective membrane permeationJournal of Membrane Science, 1988
- Solvent recovery from airJournal of Membrane Science, 1988
- Separation of organic vapors from airJournal of Membrane Science, 1987
- Development of synthetic membranes for gas and vapor separationPublished by Walter de Gruyter GmbH ,1986
- Dual sorption theoryJournal of Membrane Science, 1976