Silane modified polyester composition

A method for forming a biobased-silane modified polyester composition, comprising the steps of:

• providing a polyester blend comprising at least one biobased polyester,
• providing a polysiloxane mixture,-mixing the polyester blend and the polysiloxane mixture, and
• reacting the polyester blend and the polysiloxane mixture through reactive extrusion in
• a melt compounding process
• wherein the polysiloxane mixture is prepared by pre-treating a silane mixture by hydrolyzation and condensation polymerization of the corresponding monomers, wherein the silane mixture is hydrolyzed with an aqueous acid solution, wherein the acid is an organic acid selected from oxalic acid, malonic acid, succinic acid, biosuccinic acid, DL-malic acid, fumaric acid, maleic acid, citraconic acid, itaconic acid, L-(+)-tartaric acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, levulinic acid, malic acid, sebasic acid, lactic acid, 3-hydroxypropionic acid, 2,5-furan dicarboxylic acid, glutamic acid, glucaric acid, and aspartic acid, such that at least 50 mol % of the organic acid is difunctional.