Versatile post-polymerization modifications of a functional polyester from castor oil

• Modifications of a brominated aliphatic polyester from castor oil derivatives are described.
• Thiols, amines and carboxylic acids lead to high modification degrees under mild conditions.
• Functionalization using a carboxylic acid terminated polymer has been carried out.

This work reports a series of versatile post-polymerization modifications of an aliphatic functional polyester obtained by enzymatic polycondensation of dimethyl 2,9-dibromosebacate and 1,10-decanediol, both derived from castor oil. The alkyl halide functionality has shown to react with thiols, amines and carboxylic acids under mild conditions obtaining high modification degrees. Moreover, functionalization using NIPAAm-COOH terminated polymer has been carried out.

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