Change in thermal transitions and water uptakes of poly(l-lactic acid) blends upon hydrolytic degradation.

ABSTRACT: This article reports experimental data related to the research article entitled "Poly(malic acid-co-l-lactide) as a Superb Degradation Accelerator for Poly(l-lactic acid) at Physiological Conditions" (H.T. Oyama, D. Tanishima, S. Maekawa, 2016) [1]. Hydrolytic degradation of poly(l-lactic acid) (PLLA) blends with poly(aspartic acid-co-l-lactide) (PAL) and poly(malic acid-co-l-lactide) (PML) oligomers was investigated in a phosphate buffer solution at 40 °C. It was found in the differential scanning calorimetry measurements that upon hydrolysis the cold crystallization temperature (T_c ) and the melting temperature (T_m ) significantly shifted to lower temperature. Furthermore, the hydrolysis significantly promoted water sorption in both blends.

SUBMITTER: Oyama HT 

PROVIDER: S-EPMC5173314 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature