An Investigation About Using Engineering Polymers, Polycarbonate and Polysulfone, as Membrane in Fuel Cells

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Ramezani Kakroodi, Adel | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40684 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Ramazani Saadatabadi, Ahmad; Musavi, Abbas
Abstract:
In this work, sulfonated polycarbonate (SPC ) membranes with different acid contents have been prepared by conducting sulfonation reaction at room temperature using Chlorosulfonic acid (CSA) as sulfonating agent at different concentration of acid in reacting solution. The SPC membranes were obtained by casting from 10% solution of SPC in chloroform at room temperature. The prepared membranes were characterized using Ion exchange capacity (IEC), and degree of sulfonation (DS), Fourier Transform Infrared (FTIR), NMR spectra, Thermal Gravimetric Analysis (TGA) and Water uptake. The obtained results showed that with increaseing in Chlorosulfonic acid content in sulfonation reaction IEC and DS of membranes increase where TGA results showed that the thermal resistance of membranes decreases with increasing acid content. An increase in degree of sulfonation and thickness of membranes lead to higher water uptake from almost 14 wt.% to more than 30 wt.%
Keywords:
Polysulphone ; Membranes ; Fuel Cell ; Ion Exchange

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