biblio

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2009
S. C. Kumbharkar and Kharul, U. K., “N-substitution of polybenzimidazoles: synthesis and evaluation of physical properties”, European Polymer Journal, vol. 45, no. 12, pp. 3363-3371, 2009.
2010
S. C. Kumbharkar and Kharul, U. K., “Investigation of gas permeation properties of systematically modified polybenzimidazoles by N-substitution”, Journal of Membrane Science, vol. 357, no. 1-2, pp. 134-142, 2010.
S. C. Kumbharkar and Kharul, U. K., “New N-substituted ABPBI: synthesis and evaluation of gas permeation properties”, Journal of Membrane Science, vol. 360, no. 1-2, pp. 418-425, 2010.