INVESTIGADORES
ALVAREZ Vera Alejandra
artículos
Título:
Isothermal crystallization of Polyvinyl Alcohol-co-Ethylene
Autor/es:
VERA ALVAREZ; JOSÉ KENNY; ANALÍA VÁZQUEZ
Revista:
JOURNAL OF APPLIED POLYMER SCIENCE
Editorial:
JOHN WILEY & SONS INC
Referencias:
Lugar: New York; Año: 2003 vol. 89 p. 1071 - 1077
ISSN:
0021-8995
Resumen:
Isothermal melt crystallization of poly(vinyl alcohol?co?ethylene) with different ethylene contents was studied in the temperature range of 140°C?160°C. A differential scanning calorimeter was used to follow the energy of
the crystallization process. The results were analyzed by Avrami and Hoffman?Laurizten methods. The Avrami exponent was close to 2, indicating two-dimensional growth with a linear growth rate and crystals nucleating athermally. The equilibrium melting temperature was determined by the Hoffman?Weeks method. The rate of crystallization depended on ethylene content and temperature.
