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Crystallization of poly(butylene terephthalate)
Author(s) -
di Lorenzo M. L.,
Righetti M. C.
Publication year - 2003
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10160
Subject(s) - nucleation , materials science , crystallization , isothermal process , crystal (programming language) , surface energy , thermodynamics , morphology (biology) , crystal growth , constant (computer programming) , activation energy , polymer chemistry , composite material , chemistry , physics , genetics , biology , computer science , programming language
Abstract This article provides a thorough analysis of the crystallization process of poly(butylene terephthalate) (PBT). Isothermal crystal growth rates have been experimentally measured between 459 and 491 K, and analyzed according to the Hoffman and Lauritzen theory. A II–III regime transition occurs at 484 K, accompanied by a change in crystal morphology. By means of a non‐linear fitting procedure, precise values of the nucleation constant K g were obtained. The lateral surface free energy σ was calculated and, from this, the α parameter of the Thomas‐Staveley expression was obtained.