Accelerated Weathering of Modified Wood Flour Plastic Composites


Article Preview

The effect of accelerated weathering on the chemical and color of wood plastic composites (WPC) made from modified pine wood fiber (control, extractives free and holocellulose) was investigated. WPC were produced from the various wood fibers (60%, weight) and high density polyethylene (40%, weight) as matrix were subjected to accelerated weathering in xenon-arc weatherometer for up to 1200 hours. This study aimed at getting a better understanding of the chemical changes that occur to weathered WPC relative to its material compositions (wood and plastic). Chemical analyses and color measurement of the weathered surface using Fourier transform infrared (FTIR) spectroscopy, pyrolysis gas chromatograph mass spectrometry and colorimetery showed that degradation of WPC had occurred, causing color changes. It was observed that WPC made from holocellulose wood fiber had the lowest color change compared to extractives free wood and control wood fiber based WPC.



Advanced Materials Research (Volumes 29-30)

Edited by:

Deliang Zhang, Kim Pickering, Brian Gabbitas, Peng Cao, Alan Langdon, Rob Torrens and Johan Verbeek




J.S. Fabiyi and A.G. McDonald, "Accelerated Weathering of Modified Wood Flour Plastic Composites", Advanced Materials Research, Vols. 29-30, pp. 315-318, 2007

Online since:

November 2007




[1] Fabiyi JS, McDonald AG, Wolcott MP, Englund K. Understanding the chemistry of wood plastic composites weathering. In: Progress in wood and bio-fibre plastic composites International Conference May 1-2, 2006, Toronto, Ontario, Canada. 10P.

[2] Matuana LM, Kamdem, DP, Zhang J. J. Appl. Polym. Sci., 80 (11): (2001) p. (1943).

[3] Stark NM, Matuana LM. Surface chemistry changes of weathered HDPE/wood-flour composites studied by XPS and FTIR spectroscopy. Poly. Degrad. and Stab., 86(2004) p.1.


[4] Technical Association of Pulp and Paper Industry (TAPPI T 204 om-88). Atlanta, Georgia. 1996. p.1.

[5] Wise LE, Murphy M and D'Addireco AA. Paper Trade Journal, 122(2): (1946) p.35.

[6] American Society for Testing and Materials (ASTM D 6662). Standard Specification for Polyolefin-Based Plastic Lumber Decking Boards. Conshohocken, PA, 2003, 08 (03) p.10356.


[7] American Society for Testing and Materials (ASTM D 2244). Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates. Conshohocken, PA, 2001, 06 (01) p.240.


[8] CIE. Colorimetry. CIE Publication Number 15. 2 (2 nd edition). Vienna, Austria: Commission Internationale de l'Eclairage 1986, p.74.

[9] Feist WC and Hon DN-S. In The Chemistry of Solid Wood., Ed. RM Rowell, Adv. Chem. Series No. 207. Amer. Chem. Soc., Washington, DC., 1984, p.401.

[10] Hon DN-S. 2001. In Wood and Cellulosic Chemistry, Ed. Hon, DN-S and Shiraishi N. 2nd ed., Marcel Dekker, Inc. New York, p.513.