Synthesis of elastomeric networks from maleated soybean-oil glycerides by thiol-ene coupling

Maleated soybean-oil glycerides were photopolymerized with multifunctional thiols to give elastomeric networks. Polymers were characterized by Raman, DSC, TGA and DMTA analyses. Materials exhibited properties that resemble those of elastomers with glass transition temperatures below room temperature. Influence of thiol functionality over polymer properties was analyzed. Model reactions of monoethyl maleate and methyl oleate with monofunctional thiol were studied by 1H NMR to control the curing process.

Simplified structure of the product obtained from photopolymerization of maleated soybean oil glycerides and Penta-3MP4.Figure optionsDownload as PowerPoint slideHighlights
► Maleated glycerides photopolimerize under very mild conditions.
► Mechanical properties of the polymers resemble those of elastomeric materials.
► Glass transitions temperatures were below room temperature.
► Increasing of thiol functionality does not increase the rigidity of the materials.