M-Polynomials and Topological Indices of Styrene-Butadiene Rubber (SBR)

Abstract

It includes the study of most versatile kind of rubber namely, Styrene-Butadiene rubber (SBR) for which the M-polynomials and various topological indices are determined and depicted using graphs. The repeat units of styrene and butadiene are classified as three different entities viz., A:[CH2−CH(C6H5)]n; B:[CH2−CH(CH=CH2)]n and C:[CH2−CH=CH−CH2]n for which the polymers are considered. The same chains of A, B and C can be restricted to dimers and trimers with different combinations of these entities A, B and C like AA, AB, BC, BB, CC, ABA, ABB and so on. In this study, the polymers of A, B and C are considered.