S. C.  Kumbharkar, Karadkar, P. B., and Kharul, U. K., ?Enhancement of gas permeation properties of polybenzimidazoles by systematic structure architecture?, Journal of Membrane Science, vol. 286, no. 1-2, pp. 161-169, 2006.

Y. S.  Bhole, Wanjale, S. D., Kharul, U. K., and Jog, J. Prakash, ?Assessing feasibility of polyarylate-clay nanocomposites towards improvement of gas selectivity?, Journal of Membrane Science, vol. 306, no. 1-2, pp. 277-286, 2007.

Y. S.  Ishole, Karadkar, P. R., and Kharul, U. K., ?Effect of substituent polarity, bulk, and substitution site toward enhancing gas permeation in dibromohexafluorobisphenol-A based polyarylates?, Journal of Polymer Science Part B-Polymer Physics, vol. 45, no. 23, pp. 3156-3168, 2007.

M. P.  Achalpurkar, Kharul, U. K., Lohokare, H. R., and Karadkar, P. B., ?Gas permeation in amine functionalized silicon rubber membranes?, Separation and Purification Technology, vol. 57, no. 2, pp. 304-313, 2007.

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.

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.

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.

Y. J.  Chendake, Bhole, Y. S., Lohokare, H. R., and Kharul, U. K., ?Polyarylate based thin film composite (TFC) membranes: effects of coating parameters, gutter layer, and intrinsic material properties?, Separation Science and Technology, vol. 45, no. 2, pp. 163-171, 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.

R. S.  Bhavsar, Kumbharkar, S. C., and Kharul, U. K., ?Investigation of gas permeation properties of film forming polymeric ionic liquids (PILs) based on polybenzimidazoles?, Journal of Membrane Science, vol. 470, pp. 494-503, 2014.

A. S.  Rewar, Bhavsar, R. S., Sreekumar, K., and Kharul, U. K., ?Polybenzimidazole based polymeric ionic liquids (PILs): effects of controlled degree of N-quaternization on physical and gas permeation properties?, Journal of Membrane Science, vol. 481, pp. 19-27, 2015.

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.

S. H.  Kunjattu, Ashok, V., Bhaskar, A., Pandare, K., Banerjee, R., and Kharul, U. K., ?ZIF-8@DBzPBI-BuI composite membranes for olefin/paraffin separation?, Journal of Membrane Science, vol. 549, pp. 38-45, 2018.