Enhancement of mechanical and thermal properties of Poplar through the treatment of glyoxal-urea/nano-SiO2
作者： Yutao Yan , Youming Dong , Jianzhang Li , Shifeng Zhang , Changlei Xia
DOI: 10.1039/C5RA07294H
关键词:
摘要: Glyoxal is a cross-linking agent that could effectively improve dimensional stability and water resistance with compromising the mechanical properties of wood materials. This study explores relevant disadvantages glyoxal-treated wood, in an effort to overcome drawbacks, environmental-friendly glyoxal-urea (GU) resin synthesized from urea glyoxal, combined nano-SiO2 treat Poplar wood. Results showed GU resin-treated were significantly increased compared those treated glyoxal alone, incorporation further improved performance. The fracture morphology GU/nano-SiO2-treated was also characterized, indicating elasticity. Scanning electron microscopy energy dispersive X-ray (SEM-EDX) results existed not only cell lumens, but walls. Fourier transform infrared spectroscopy (FT-IR) test formation into samples. Thermal analysis demonstrated thermal after samples solely glyoxal-treated. Improvement can most likely be attributed cross-linkage length among celluloses, and/or filling effect GU/SiO2 voids
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