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Isothermal Melt Crystallization Kinetics of Poly(L-Lactic Acid)

E. Urbanovici
H. Schneider
D. Brizzolara
H. Cantow
Journal / Anthology

Journal of Thermal Analysis
Year: 1996
Volume: 47
Page range: 931-939

A DSC study was carried out of the isothermal melt crystallization kinetics of poly(L-lactic acid), PLLA, at 110, 115, 120, 125, and 130 degrees C. The experimental data were evaluated within the framework of the well-known Avrami kinetic model and an extended model involving an additional third kinetic parameter [8]. In order to perform the necessary numerical calculations, a number of functions built into the Mathematica software system were used. The results showed that the isothermal melt crystallization kinetics of PLLA can be described adequately by both these kinetic models. It should also be stressed that the kinetic model of Urbanovici and Segal offers a better description of the experimental melt crystallization data of PLLA than the classical Avrami model.

*Engineering > Chemical Engineering