Journal article
Wood plastic composites weathering: Visual appearance and chemical changes
Polymer degradation and stability, Vol.93(8), pp.1405-1414
2008
Handle:
https://hdl.handle.net/2376/117819
Abstract
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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Details
- Title
- Wood plastic composites weathering: Visual appearance and chemical changes
- Creators
- James S Fabiyi - Department of Forest Products, University of Idaho, Moscow, ID 83844-1132, USAArmando G McDonald - Department of Forest Products, University of Idaho, Moscow, ID 83844-1132, USAMichael P Wolcott - Wood Material and Engineering Laboratory, Washington State University, Pullman, WA 99164-1806, USAPeter R Griffiths - Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA
- Publication Details
- Polymer degradation and stability, Vol.93(8), pp.1405-1414
- Academic Unit
- Office of Clean Technology
- Publisher
- Elsevier Ltd
- Identifiers
- 99900548320401842
- Language
- English
- Resource Type
- Journal article