M. A.  Phadke, Kulkarni, S. S., Karode, S. K., and Musale, D. A., ?Poly(acrylonitrile) ultrafiltration membranes. II. membrane morphology and permeation characteristics?, Journal of Polymer Science Part B: Polymer Physics, vol. 43, no. 15, pp. 2074-2085, 2005.

S. H.  Nair, Pawar, K. C., Jog, J. Prakash, and Badiger, M. V., ?Swelling and mechanical behavior of modified poly(vinyl alcohol)/laponite nanocomposite membranes?, Journal of Applied Polymer Science, vol. 103, no. 5, pp. 2896-2903, 2007.

R.  Kannan, Kakade, B. A., and Pillai, V. K., ?Polymer electrolyte fuel cells using nafion-based composite membranes with functionalized carbon nanotubes?, Angewandte Chemie-International Edition, vol. 47, no. 14, pp. 2653-2656, 2008.

S. S.  Kothawade, Kulkarni, M. P., Kharul, U. K., Patil, A. S., and Vernekar, S. P., ?Synthesis, characterization, and gas permeability of aromatic polyimides containing pendant phenoxy group?, Journal of Applied Polymer Science, vol. 108, no. 6, pp. 3881-3889, 2008.

M.  Kulkarni, Potrekar, R., Kulkarni, R. A., and Vernekar, S. P., ?Nitrophenoxy groups containing polybenzimidazoles as polymer electrolytes for fuel cells: synthesis and characterization?, Journal of Applied Polymer Science, vol. 117, no. 6, pp. 3282-3292, 2010.

R. S.  Bhavsar, Nahire, S. B., Kale, M. S., Patil, S. G., Aher, P. P., Bhavsar, R. A., and Kharul, U. K., ?Polybenzimidazoles based on 3,3 `-diaminobenzidine and aliphatic dicarboxylic acids: synthesis and evaluation of physicochemical properties toward their applicability as proton exchange and gas separation membrane material?, Journal of Applied Polymer Science, vol. 120, no. 2, pp. 1090-1099, 2011.

B. P.  Biswal, Chaudhari, H. D., Banerjee, R., and Kharul, U. K., ?Chemically stable covalent organic framework (COF)-polybenzimidazole hybrid membranes: enhanced gas separation through pore modulation?, Chemistry-A European Journal, vol. 22, no. 14, pp. 4695-4699, 2016.

S. V.  Shaligram, Rewar, A. S., Wadgaonkar, P. P., and Kharul, U. K., ?Incorporation of rigid polyaromatic groups in polybenzimidazole-based polymeric ionic liquids: assertive effects on gas permeation properties?, Polymer, vol. 93, pp. 30-36, 2016.

B.  Shrimant, Shaligram, S. V., Kharul, U. K., and Wadgaonkar, P. P., ?Synthesis, characterization, and gas permeation properties of adamantane-containing polymers of intrinsic microporosity?, Journal of Polymer Science Part A-Polymer Chemistry, vol. 56, no. 1, pp. 16-24, 2018.