Study on polymerization of bio-based isosorbide monomethacrylate for the formation of low-T and high-T sustainable polymers

Isosorbide monomethacrylate (IMMA) is a biobased monomer that appears as potential substitute for current petrobased methacrylates to prepare high-performance sustainable polymers by free-radical polymerization technique. However, the molecular weight of can markedly affect their physical, mechanical and processing properties, it crucial understand nature processes control growing IMMA based polymer chains. To this end, free radical polymerizability has been investigated in depth under various conditions (solvent, conversion rate, [IMMA]/[AIBN] ratio). This study, on determination chain transfer constants using Mayo method, highlighted key role solvent reactions controlling PIMMA (CtrM = 5.0x10-4 ; CtrS (DMSO) 4.0x10-4; (DMF) 5.0x10-4; (Isopropanol/dioxane (1:6)) 1.0x10-3). Knowing parameters governing IMMA, with tailored (from 2100 80200 g.mol?1) Tg have prepared characterized. In particular, DSC analyses revealed opportunity from low-Tg high-Tg materials different applications.