Preparation and characterization of polymer electrolyte membrane from chloroacetate chitosan/chitosan blended with epoxidized natural rubber |
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| Affiliation: | 1. Department of Rubber Technology and Polymer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus, Pattani 94000, Thailand;2. Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany;3. Technische Universität Dresden, Institut für Werkstoffwissenschaft, D-01069 Dresden, Germany;4. Technical University of Tampere, Korkeakoulunkatu 16, Fi-33101 Tampere, Finland;1. School of Chemical Sciences, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia;2. School of Distance Education, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia;1. Sustainable Urban Transport Research Centre (SUTRA), Dept. of Civil & Structural Engineering, Universiti Kebangsaan Malaysia, Malaysia;2. Dept. of Mechanical and Materials Engineering, Universiti Kebangsaan Malaysia, Malaysia;3. Dept. of Civil Engineering, Universiti Malaya, Malaysia |
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| Abstract: | Chitosan-based membranes are among the most effective and efficient PEMs for fuel cells, however their low proton conductivity needs to be improved. In this study, chitosan, chloroacetate chitosan (CCS), chitosan blend with epoxidized natural rubber (ENR), and CCS with ENR blend based membranes were prepared by solution casting, crosslinked with NaOH and H2SO4, and investigated for physical, chemical, electrical and ionic properties. The functional groups were identified by ATR-FTIR spectroscopy and the peaks matched improved membrane properties. The surface roughness of the membranes was determined by AFM, and it increased with the amount of ENR. The electrical properties measured with an LCR meter showed that the CCS, CS and CS-B had the highest conductance, conductivity, capacitance and dielectric constant, while the CCS10/ENR8, CS10/ENR8 and CS15/ENR3 showed the highest resistance and resistivity. Furthermore, the CCS gave the lowest dissipation factor, which indicates its suitability for use in a PEM. In addition, the contact angle was relatively high for CS-B, CS and CCS. |
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| Keywords: | Chloroacetate chitosan Epoxidized natural rubber Polymer electrolyte membrane fuel cell |
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