TY - JOUR
T1 - Wood plastic composites weathering
T2 - Visual appearance and chemical changes
AU - Fabiyi, James S.
AU - McDonald, Armando G.
AU - Wolcott, Michael P.
AU - Griffiths, Peter R.
N1 - Funding Information:
The authors would like to acknowledge technical and scientific assistance from Dr. K. Englund and Mr. B. Olson at Washington State University. The Office of Naval Research, under the direction of Mr. Ignacio Perez, sponsored this work under Grant N00014-03-1-0949. The National Research Initiative of the USDA Cooperative State Research, Education and Extension Service (grant number 2005-35103-15243) provided support for the FT-IR spectrometer.
PY - 2008/8
Y1 - 2008/8
N2 - The effects of outside and accelerated (xenon-arc and UVA) weathering on the visual appearance and chemical changes of wood plastic composite (WPC) formulations based on high density polyethylene (HDPE) and polypropylene (PP) were investigated. Colorimetry, scanning electron microscopy, Fourier transform infrared spectroscopy (FT-IR), and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) were employed in this study. The study showed that for both outside and accelerated weathering, longer exposure time increased the degree of color change (and lightness), carbonyl concentrations, and wood loss on weathered WPC surfaces. HDPE-based WPC exhibited decreased lightening, carbonyl concentrations, and wood content loss when compared to PP-based WPC. From this study, relationships between chemical and color changes that occurred during exterior weathering of HDPE-based WPC were established. Oxidation and degradation of wood lignin influenced WPC color changes (lightening) during weathering.
AB - The effects of outside and accelerated (xenon-arc and UVA) weathering on the visual appearance and chemical changes of wood plastic composite (WPC) formulations based on high density polyethylene (HDPE) and polypropylene (PP) were investigated. Colorimetry, scanning electron microscopy, Fourier transform infrared spectroscopy (FT-IR), and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) were employed in this study. The study showed that for both outside and accelerated weathering, longer exposure time increased the degree of color change (and lightness), carbonyl concentrations, and wood loss on weathered WPC surfaces. HDPE-based WPC exhibited decreased lightening, carbonyl concentrations, and wood content loss when compared to PP-based WPC. From this study, relationships between chemical and color changes that occurred during exterior weathering of HDPE-based WPC were established. Oxidation and degradation of wood lignin influenced WPC color changes (lightening) during weathering.
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U2 - 10.1016/j.polymdegradstab.2008.05.024
DO - 10.1016/j.polymdegradstab.2008.05.024
M3 - Article
AN - SCOPUS:48549095053
SN - 0141-3910
VL - 93
SP - 1405
EP - 1414
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 8
ER -