Porous Poly(D,L-Lactide) and Poly(D,L-Lactide-Co-Glycolide) Produced by Thermal Salt Elimination from Halogenocarboxylateselectronic Supplementary Information (Esi) Available: Detailed Results of the Combustion Calorimetric Experiments. See Http://Www.rsc.org/Suppdata/Dt/B1/B104979H/