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Excimer laser-induced surface modification of poly(ethylene terephthalate)

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: C. Ursu, I. Bordianu, M. Dobromir, M. Drobota, C. Cotofana, M. Olaru, B. C. Simionescu

Editorial: Revue Roumaine de Chimie, 57 (4-5), p.501-506, 2012.


The effects on chemical and physical properties of biaxial stretched poly(ethylene terephthalate)(PET) as a result of KrF (24 8 nm) and XeCl (308 nm) laser irradiation were investigated. Below ablation threshold, roughening of the surface was detected, with the formation of periodic surface structures for 308 nm irradiation, while above the ablation threshold, dendrites or granular protuberances superimpose the densely-packed nap structures. The changes in surface properties were investigated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The obtained results suggest that the texture types originate from different contribution rates of photothermal and
photochemical mechanisms.

Cuvinte cheie: excimer laser, surface modification, dendrite, nap structure