INVESTIGADORES
ALVAREZ Vera Alejandra
artículos
Título:
ISOTHERMAL CRYSTALLIZATION OF LAYERED SILICATE/STARCH-POLYCAPROLACTONE BLEND NANOCOMPOSITES
Autor/es:
CLAUDIO JAVIER PÉREZ; ANALÍA VÁZQUEZ; VERA ALVAREZ
Revista:
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Editorial:
Springer
Referencias:
Año: 2008 vol. 91 p. 749 - 757
ISSN:
1418-2874
Resumen:
The isothermal crystallization behavior of layered silicate/starch-polycaprolactone blend nanocomposites was studied by means of differential scanning calorimetry (DSC) measurements. The theoretical melting point was higher for the matrix than for nanocomposites. At low clay concentration, the induction time decreased and the overall crystallization rate increased acting as nucleating agent whereas at higher concentrations became retardants. Classical Avrami equation was used to analyze the crystallization kinetic of these materials. n values suggested that clay not only affected the crystallization rate but also influenced the mechanism of crystals growth. An Arrhenius type equation was used for the rate constant (k). Models correctly reproduced the experimental data.n values suggested that clay not only affected the crystallization rate but also influenced the mechanism of crystals growth. An Arrhenius type equation was used for the rate constant (k). Models correctly reproduced the experimental data.
