Nonisothermal crystallization behavior of poly(aryl ether ether ketone)

Authors
Citation
Y. Seo et S. Kim, Nonisothermal crystallization behavior of poly(aryl ether ether ketone), POLYM ENG S, 41(6), 2001, pp. 940-945
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
POLYMER ENGINEERING AND SCIENCE
ISSN journal
0032-3888 → ACNP
Volume
41
Issue
6
Year of publication
2001
Pages
940 - 945
Database
ISI
SICI code
0032-3888(200106)41:6<940:NCBOPE>2.0.ZU;2-V
Abstract
A study has been made of the crystallization behavior of poly(aryl ether et her ketone), PEEK, under nonisothermal conditions. A differential scanning calorimeter (DSC) was used to monitor the energetics of the crystallization process from the melt. For nonisothermal studies, the melt was crystallize d by cooling at rates from 1 degreesC/min to 10 degreesC/min. A kinetic ana lysis based on the recently proposed model for nonisothermal crystallizatio n kinetics to remedy the drawback of the Ozawa equation was applied. The Av rami exponent for the nonisothermal crystallization process was strikingly different from that of the isothermal process, which indicates different cr ystallization behaviors. The results agree with the morphological observati on reported in the literature. This study shows that correct interpretation of the Avrami exponent provides valuable information about the crystal str ucture and its morphology.