Kinetics of surface crystallization in thin films of poly(ethylene terephthalate)

Jukes, Paul C., Das, Arindam, Durell, Martin, Trolley, Dean, Higgins, Anthony M., Geoghegan, Mark, Macdonald, John Emyr ORCID: https://orcid.org/0000-0001-5504-1692, Jones, Richard A. L., Brown, Simon and Thompson, Paul 2005. Kinetics of surface crystallization in thin films of poly(ethylene terephthalate). Macromolecules 38 (6) , pp. 2315-2320. 10.1021/ma0490606

Full text not available from this repository.

Abstract

In-situ grazing incidence X-ray diffraction has been used to investigate the kinetics of crystallization at the surface of thin films of poly(ethylene terephthalate) (PET). By varying the angle of incidence of the X-ray beam around the critical angle of the film, the penetration depth can be tuned to allow a direct comparison of molecular ordering in the surface and bulk of the film. The results show that ordering occurs significantly faster at the surface in the temperature range 90−100 °C (close to the bulk glass transition temperature of 75 °C). The (0 1̄ 1) and (0 1 0) peaks narrow more rapidly and achieve a lower width, indicating that the crystallization progresses more rapidly in these crystallographic directions. This enhanced ordering is attributed to a combination of surface energy effects, which promote localized packing, and to an enhanced segmental mobility near the free surface.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	ACS Publications
ISSN:	0024-9297
Last Modified:	24 Oct 2022 10:45
URI:	https://orca.cardiff.ac.uk/id/eprint/45734

Citation Data

Cited 48 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item