Abstract
A series of novel aliphatic copolyesters bearing vinylsulfide and ketone functional groups were synthesized via lipase catalyzed polycondensation of vegetable oil derivatives. The vinylsulfide-containing hydroxyacid (VSHA) from 10-undecenoic fatty acid and the ketone-containing hydroxyester (KHE) from methyl oleate were used to obtain random copolymers and further sequential and single-step strategies involving the reactions with thiol and oxyamine were investigated. Good agreement between product and feed stoichiometries was achieved in both reactions for sequential modification, and the order of addition seems not to be a significant parameter. One pot functionalization allows for the single step modification, but not quantitative reactions were achieved.
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