polylactide

Performance characteristics of polylactide-talc composites

The influence of the filler - talc, its content, additional heat treatment and temperature on the physical-mechanical and thermophysical properties of polylactide materials, in particular on the surface hardness, heat resistance according to Vick and thermomechanical characteristics has been studied. The influence of filler and temperature on the resistance of polylactide materials to the action of the aqueous medium is revealed. The diffusion coefficient of water in polylactide materials and the activation energy of the diffusion process were determined.

FEATURES OF OBTAINING AND PROPERTIES OF BINARY BLENDS OF POLYLACTIDES. REVIEW

Technological features of obtaining biodegradable binary blends of polylactide with polyhydroxybutyrate, polycaprolactone, thermoplastic starch, polybutylene adipate-co-terephthalate, polybutylene succinate, polybutylene succinate-co-adipate are considered. The influence of polymer applications on physical-mechanical, thermophysical, technological properties and ability to biodegradation and biocompatibility of the obtained materials is revealed. The main possible directions of using binary biodegradable polylactide blends are considered.

Degradation of Poly(3-hydroxybutyrate) and its Derivatives: Characterization and Kinetic Behavior

We focused on hydrolytic degradation kinetics at 310 and 343 K in phosphate buffer to compare PLA and PHB kinetic profiles. Besides, we revealed the kinetic behavior for copolymer PHBV (20 % of 3-hydroxyvalerate) and the blend PHB-PLA (1:1). The intensity of biopolymer hydrolysis is characterized by total weight lost and the viscosity-averaged molecular weight (MW) decrement. The degradation is enhanced in the series PHBV < PHB < PHB-PLA blend < PLA.