Improvement of decay resistance of wood by in-situ hybridization of reactive monomers and nano-SiO2 within wood

Authors

  • Xiaoying Dong
  • Xiao Zhuo
  • Chang Liu
  • Jie Wei
  • Gang Zhang
  • Rutan Pan
  • Yongfeng Li

Keywords:

wood, porous structure, decay resistance, nano-SiO2, organic-inorganic hybrid nanocomposite, reactive monomer

Abstract

In order to improve the decay resistance of wood, we propose a novel method by in-situ hybridization of reactive monomers and nano-SiO2 within wood porous structure to modify wood structure and chemical components. Glycidyl methacrylate (GMA), and polyethylene glycol-200 dimethacrylate (PEGDMA) were first mixed and then penetrated into poplar wood cell lumen by vacuum/pressure treatments, followed by in-situ hybridization under an initiation condition. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX) and transmission electron microscopy (TEM) observations described that the polymer-inorganic hybrid nanocomposite filled up cavities and tightly contacted the wood cell wall. Nano-SiO2 particles were uniformly dispersed into the formed polymer within wood pores. Fourier transform infrared spectroscopy (FTIR) analysis suggested that the nano-SiO2 probably chemical bonded to the polymer during the monomer polymerization. The derived wood-based polymer-inorganic hybrid nanocomposite exhibited remarkably improvement in decay resistance over the untreated wood as controls. Such treatment could potentially widen the wood applications with outstanding decay resistance.

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Published

2016-11-01

Issue

Vol. 1 No. 2 (2016): Volume 1 Issue 2

Section

RESEARCH ARTICLES

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