Crystallinity and vinyl groups formation in polyethylene films exposed to UV-B radiation

A. Martínez-Romo; R. González-Mota; J. J. Soto-Bernal; C. Frausto-Reyes; I. Rosales-Candelas; E. I. Muñoz-Campos

doi:10.1117/12.911955

14 October 2011 Crystallinity and vinyl groups formation in polyethylene films exposed to UV-B radiation

A. Martínez-Romo, R. González-Mota, J. J. Soto-Bernal, C. Frausto-Reyes, I. Rosales-Candelas, E. I. Muñoz-Campos

Proceedings Volume 8287, Eighth Symposium Optics in Industry; 82870H (2011) https://doi.org/10.1117/12.911955
Event: Eighth Symposium Optics in Industry, 2011, Toluca de Lerdo, Mexico

Abstract

Polyethylene (PE), is a polymer formed by carbon-carbon single bonds, is a very stable material with a very slow degradation rate. In this paper, polyethylene films bag type were exposed to UV-B radiation (320-280 nm) at different exposure times (2 to 12 days). The UV radiation effects on PE samples were characterized using infrared spectroscopy with attenuated total reflectance (ATR). The vinyl group formation indicates the PE degradation. These chemical groups have IR absorption in 900-1300 cm-1; additionally the degree of crystallinity increase with the increasing of the exposure time. The experiment showed significant changes in PE molecular structure.

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A. Martínez-Romo, R. González-Mota, J. J. Soto-Bernal, C. Frausto-Reyes, I. Rosales-Candelas, and E. I. Muñoz-Campos "Crystallinity and vinyl groups formation in polyethylene films exposed to UV-B radiation", Proc. SPIE 8287, Eighth Symposium Optics in Industry, 82870H (14 October 2011); https://doi.org/10.1117/12.911955

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