In PLA/PPG1 blends the phase separation was the most intense and led
to the formation of PPG1 droplets, which facilitated plastic deformation of the blends and enabled to achieve the elongation at break of about 90e100% for 10 and 12.5 wt% PPG1 content in spite of relatively high Tg of PLA rich phase of the respective blends, 46.1e47.6 C. Poly(ethylene glycol) (PEG), long known as a plasticizer for PLA, with nominal Mw of 600 g/mol, was also used to plasticize PLA for comparison. 2006 Elsevier Ltd. All rights reserved.