1. Department of Chemical Engineering; Indian Institute of Technology Kharagpur; Kharagpur West Bengal 721302 India
2. Automotive and Flexible Foam Division, Huntsman Polyurethanes; Navi Mumbai Maharashtra 400710 India
3. Solid State Physics Division, Bhabha Atomic Research Centre; Mumbai Maharashtra 400085 India
4. Polymer Division, Naval Materials Research Laboratory; Ambernath Maharashtra 421506 India