Terpene-derived bio-based elastomers and elastomeric materials via RAFT-mediated miniemulsion polymerization Uddhab Kalita 1 , Nikhil K. Singha 1,2 1 Rubber Technology Centre, Indian Institute of Technology, India, 2 School of Nanoscience and Technology, Indian Institute of Technology, India Elastomers and elastomeric materials play a pivotal role across diverse industries, encompassing automotive, construction, electronics, footwear, adhesives, and biomedicine. Traditional elastomeric materials primarily originate from petroleum-based sources, necessitating a shift towards sustainable alternatives. 1 This study focuses on the synthesis of bio-based elastomers employing terpene monomers, addressing the demand for eco-friendly elastomeric solutions. The copolymerization of terpene monomers with glyco-based or bio-based (meth)acrylate monomers is achieved through RAFT-mediated miniemulsion polymerization. This technique ensures precise control over molecular weight and narrow polydispersity of the resulting copolymers. The terpene component imparts elastomeric properties, while the glyco/(meth)acrylate component enhances material strength. The mechanical analysis underscores the impressive performance and recyclability of bio-based elastomeric materials. Furthermore, the material demonstrates notable film-forming capability and transparency. Biocompatibility evaluation via MTT assay reveals the material's potential for biomedical applications, including patches and catheter pipes. This research underscores the viability of terpene-derived bio-based elastomers synthesized through RAFT-mediated miniemulsion polymerization. By offering an environmentally conscientious alternative, this elastomeric material opens avenues for sustainable and biocompatible biomedical applications. References 1. Kalita, U., Samanta, S., Banerjee, S. L., Das, N. C. & Singha, N. K. Biobased Thermoplastic Elastomer Based on an SMS Triblock Copolymer Prepared via RAFT Polymerization in Aqueous Medium. Macromolecules 54 , 1478–1488 (2021).
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