pH-Sensitive electrical behavior of 4-vinylpyridine grafts on poly(propylene) films

E. Arenas, H. Tiznado, D. Domínguez
Procedia Engineering, Volume 35, 2012


An interesting, electrical behavior of Poly(4-vinylpyridine) was observed at different pH values. 4-vinylpyridine was grafted onto mechanically durable poly(propylene) films to synthesize a pH responsive hydrogel. We have focused on the influence of temperature and pH on the electrical behavior response of hydrogel. An abrupt increase of its electrical resistance from 5 to 20 X106 Ω was observed when the hydrogel (100% grafted) was swelled on phosphate buffer solutions with pH value of 4 and 8 respectively.

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