Tremendous efforts have been taken for the synthesis of sustainable or green polymers in the literature. A sustainable poly(DBI-co-butadiene) elastomer was synthesized 21a via environmentally benign emulsion polymerization methods. The resulting copolymers showed very high molecular weight (Mn, 236 KDa to 392 KDa) and mechanical properties as good as the synthetic rubber although they possess 𝑇 𝑔 of -42 to -72 °C. Copolymerization of myrcene and styrene for the synthesis of terpene-based renewable polymers under cationic polymerization conditions in aqueous medium was reported. The resulting copolymers exhibit high molecular weights (Mn, 60 to 120 kDa) and glass transition temperatures (𝑇 𝑔 , -43 to 15 °C). Sarkar and Bhowmick also reported the synthesis of styrene-DBI copolymers which have shown potential as substitutes for synthetic elastomers, exhibiting a range of sub-ambient glass 𝑇 𝑔 between -60.3 °C to -33.5 °C, depending on the weight percent of myrcene. Myrcene is a naturally occurring terpene found in plants such as thyme and lemongrass , while DBI can be produced by the fermentation of raw corn starch , resulting in a fully bioderived myrcene-DBI copolymer. These efforts mark an important step towards the replacement of petroleumbased polymers with sustainable alternatives. However, the lower 𝑇 𝑔 restricts the copolymer's use across a broader range of applications. To enhance the practical utility of this polymer, we propose incorporating styrene as a third monomer. This modification is expected to elevate the 𝑇 𝑔 of the resulting terpolymer to the ambient range enabling further applications of the terpolymer in its glassy state. We posit that the presence of rigid phenyl side chains in the styrene monomer would increase the 𝑇 𝑔 of the terpolymer . Although styrene is not derived from renewable sources, its global production exceeds 30 million tons per year , making it an easily accessible monomer. To maintain the sustainability profile of the final terpolymer, we aim to limit the incorporation of styrene while still seeking to elevate the 𝑇 𝑔 of the terpolymer.