Patent ID: 8716398

Claim:
A method for preparing a biodegradable polymer stereocomplex comprising: introducing together two lactide homopolymers that comprise a D-form lactide homopolymer and an L-form lactide homopolymer into a reactor; adding an organic solvent and subsequently a supercritical fluid to the reactor wherein the organic solvent is between 25 to 50 percent of the total weight of the organic solvent and the supercritical fluid, wherein the organic solvent is selected from the group consisting of xylene, ethylbenzene, chlorobenzene, dichlorobenzene, methyl ethyl ketone, cyclohexanone, acetophenone, methyl isobutyl ketone, isophorone, diisobutyl ketone, diethyl carbonate, diethyl sulfate, diacetone alcohol, decanol, stearic acid, and mixtures thereof; and subjecting the two lactide homopolymers to conditions effective to obtain a polymer stereocomplex in a mixture of the organic solvent and the supercritical fluid.