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Licensed Unlicensed Requires Authentication Published by De Gruyter July 30, 2011

Improvement of dimensional stability of wood via combination treatment: swelling with maleic anhydride and grafting with glycidyl methacrylate and methyl methacrylate

Yongfeng Li, Qinglin Wu, Jian Li, Yixing Liu, Xiang-Ming Wang and Zhenbo Liu
From the journal


A novel two-step combined treatment of poplar wood was developed to improve its dimensional stability. Maleic anhydride (MAN) was first employed to swell and bond to the wood cell wall, and then mixed monomers of glycidyl methacrylate/methyl methacrylate (GMA/MMA) were grafted to the cell wall through the chemical reaction with MAN within the wood cell lumen. The results of scanning electron microscopy and energy dispersive X-ray apparatus (SEM-EDX) and Fourier transform infrared spectroscopy (FTIR) analyses indicate that MAN penetrated and chemically bonded to the cell wall causing 9% volume swelling, and the copolymer from GMA/MMA monomers was grafted onto the wood cell wall, resulting in the improved interfacial compatibility between the polymer and wood matrix. The dimensional stability of poplar wood modified by the combined two-step treatment was remarkably improved compared with that of untreated poplar wood. The combination treatment of wood employed in this study proved to be more effective for improving the dimensional stability than treatment with PEG-1000 aqueous solution with 30% concentration.

Corresponding author. Room 711, Engineering Building, Material Science and Engineering College, Northeast Forestry University, No. 26 Hexing Road, Harbin, 150040, P.R. China Phone: +86 451 82190134; 13503603048

Received: 2010-12-15
Accepted: 2011-6-21
Published Online: 2011-07-30
Published in Print: 2012-01-01

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