Preparation and characterization of Matrimid/P84 blend films

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dc.contributor.author Qiu, Shuzhen
dc.date.accessioned 2014-12-19T16:14:42Z
dc.date.available 2014-12-19T16:14:42Z
dc.date.issued 2014-12-19
dc.identifier.uri http://hdl.handle.net/2097/18803
dc.description.abstract Polymeric membranes have been playing important roles in gas or liquid separations. Polyimide polymers are of interest due to their commercially availability along with good transport, thermal and mechanical properties. In this study, two common commercial polyimide polymers, Matrimid and P84 were blended, to combine the good transport property of Matrimid with the plasticization resistance of P84. Matrimid/P84 blend solutions ranging from 0-100 wt. % Matrimid were prepared to make blend films. Physical properties (density, d-spacing, thickness), transport properties (permeability of H2, N2, CH4, Ar, He, CO2, and gas pairs selectivity), thermal property (mass loss curves of TGA), and liquid solutes (water, methanol, toluene, butanol, 1-propanol, 2-propanol) desorption behavior were measured or characterized. Rules of changing behavior of the properties with mass fraction of Matrimid were investigated, summarized, and interpreted mathematically. As Matrimid mass fraction increases, there are more mobility and space between polymer chains, therefore there are smaller density, larger d-spacing, larger fractional free volume (FFV) and larger permeability. The selectivity-permeability relationship follows the trade-off line. Thermal mass loss curve of the blend films in air have presented intermediate characteristic with rising fraction of Matrimid compared to individual polymers. A partial-miscible behavior has been found from the correlation between permeability and FFV. The desorption behavior was found to be reasonably described by the case III model, where the diffusion rate is similar with relaxation rate of polymers. en_US
dc.description.sponsorship United States Department of Agriculture en_US
dc.language.iso en_US en_US
dc.publisher Kansas State University en
dc.subject Chemical engineering en_US
dc.subject Matrimid en_US
dc.subject P84 en_US
dc.subject Permeability en_US
dc.subject Desorption en_US
dc.subject Partial-miscible en_US
dc.title Preparation and characterization of Matrimid/P84 blend films en_US
dc.type Thesis en_US
dc.description.degree Master of Science en_US
dc.description.level Masters en_US
dc.description.department Department of Chemical Engineering en_US
dc.description.advisor Mary Rezac en_US
dc.subject.umi Chemical Engineering (0542) en_US
dc.date.published 2015 en_US
dc.date.graduationmonth May en_US


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