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13 - Electrical and Electronic Engineering, Metallurgy and Materials
University of Cambridge
Effect of molecular weight on hydrated morphologies of the short-side-chain perfluorosulfonic acid membrane
The influence of varying molecular weight is usually neglected in molecular simulations of polymer morphology owing to the large chain lengths and slow dynamics involved. Using a methodology developed by Elliott, this study utilized - for first time - molecular weights approaching realistic values to demonstrate effect on morphology of polymer electrolytes. The results show a transition from isotropic ionic clusters for short chain to elongated ionic aggregates at higher molecular weights, resolving a long-standing controversy between proponents of these two models in the literature. Led to invited orals at 223rd ECS meeting, 2012 GRC on Membranes, IMRC 2011 Mexico.
