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.

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.

L.  Alladi, Lele, A. K., and Kharul, U. K., ?Poly(2,5-Benzimidazole) as a membrane material for solvent dehydration: effect of bound methanesulfonic acid?, Journal of Applied Polymer Science, vol. 142, no. 44, 2025.

N. C.  Somkuwar, Thorat, N. M., Ambade, A., and Kharul, U. K., ?Poly(2,5-Benzimidazole)-based flat sheet membranes: investigating effects of dope solvent and membrane heat treatment on forward osmosis and acid enrichment performances?, Journal of Applied Polymer Science, vol. 143, no. 11, 2026.