Infrared depth profiling studies of recrystallization in laser-amorphized poly(ethylene terephthalate)

Autor:	D. S. Dunn, Philip D. Richards, Eric Weitz, A. J. Ouderkirk
Rok vydání:	1993
Předmět:	Ethylene Chemistry Infrared General Engineering Recrystallization (metallurgy) Infrared spectroscopy Laser law.invention chemistry.chemical_compound Chemical engineering law Polymer chemistry Degree of order Physical and Theoretical Chemistry Crystallization Poly ethylene
Zdroj:	The Journal of Physical Chemistry. 97:12061-12066
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100148a036
Popis:	Infrared depth profiling and time-resolved infrared spectroscopy have been used to study recrystallization in laser-amorphized films of poly(ethylene terephthalate) (PET). Laser amorphization of the sample film produces a situation in which both primary and secondary crystallization processes can be independently observed in the subsequent recrystallization of the film. The data are consistent with a model in which recrystallization is nucleated by the interface of laser-amorphized and untreated PET followed by an oriented primary growth process which propagates from this interface toward the surface of the film. Random secondary crystallization processes increase the degree of order in portions of the film which have undergone primary crystallization
Databáze:	OpenAIRE
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