Paper Title:
Following the First Steps of UV Degradation of High Density Polyethylene by Fluorescence Spectroscopy
  Abstract

Ultraviolet radiation is one of the major factors that affect weathering of polymers. Indeed, diffusion of oxygen containing groups [-C-O, C=O and C(=O)O-] into the molecular chains of polymers is particularly enhanced by UV irradiation in air, thus entailing structural and chemical changes such as polymeric chain breaking, cross-linking and oxidation. The goal of this study is to predict the photo-chemical ageing of polymers upon UV radiation through a non destructive method: fluorescence spectroscopy. In the case of high density polyethylene (HDPE) the addition of fluorophore is required to make it fluorescent. The spectral features of fluorescence are very sensitive to the interactions between the excited molecules and the matrix. In this way, Fourier-Transform InfraRed spectrophotometry (FTIR) and Differential Scanning calorimetry (DSC) have been employed to correlate the fluorescence spectra with the degradation phenomena.

  Info
Periodical
Defect and Diffusion Forum (Volumes 289-292)
Edited by
A. Agüero, J.M. Albella, M.P. Hierro, J. Phillibert and F.J. Pérez Trujillo
Pages
741-746
DOI
10.4028/www.scientific.net/DDF.289-292.741
Citation
L. Douminge, S. Mallarino, X. Feaugas, J. Bernard, "Following the First Steps of UV Degradation of High Density Polyethylene by Fluorescence Spectroscopy", Defect and Diffusion Forum, Vols. 289-292, pp. 741-746, 2009
Online since
April 2009
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