Abstract
Growing interest has been paid to the importance of the capability of a material to self-heal, since it can extend the service period and reduce the replacement cost of the product. Thus, proton exchange membrane (PEM) was designed to self-heal in this study. Freezing-thawing method was used to impart physical crosslinking without the incorporation of crosslinkers in the preparation of a self-healable PEM with Nafion and PVA. Nafion-PVA membrane was found to be able to repair the damage and restore its original properties. The results also showed that the addition of PVA in Nafion reduced the methanol permeability by 40.33% as compared to recast Nafion membrane. A good methanol blocker with self-healing capability, Nafion-PVA membrane is a promising PEM for use in direct methanol fuel cells (DMFCs).
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