Abstract
Itaconic acid (IA) with its trifunctional structure was first introduced into the wood cell lumen and cell wall, which functions as a grafting anchor for fixing various polymers via strong chemical bonds. Then nano-SiO2 was grafted to the IA-modified wood. Field-emission scanning electron microscope revealed that the grafting experiment was successful and that the modified cell wall thickness increased by 65%. The incorporated hydrophobic nano-SiO2 substructure reduced the wood’s hygroscopicity and improved its dimensional stability. The thermal stability of the new composite was also excellent. The presented approach is simple and efficient and the probability is high that it can be up-scaled to a level of a large-scale engineering material.
Acknowledgments
This work was sponsored by a special Fund from the Beijing Common Construction Project and the Beijing Forestry University, Grant no. 2016HXKFCLXY001.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
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