A Note on the Surface Deterioration of Scrimber Composites Exposed to Artificial Ageing
by
Minzhen Bao 1
, Fei Rao 1,2, Sheng He 1, Yongjie Bao 1, Zaixing Wu 1, Neng Li 1,* and Yuhe Chen 1,*
Minzhen Bao 1, Fei Rao 1,2, Sheng He 1, Yongjie Bao 1, Zaixing Wu 1, Neng Li 1,* and Yuhe Chen 1,*
1
Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China
2
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
*
Authors to whom correspondence should be addressed.
Coatings 2019, 9(12), 846; https://doi.org/10.3390/coatings9120846
Received: 1 November 2019 / Revised: 5 December 2019 / Accepted: 9 December 2019 / Published: 10 December 2019
The effect of ultraviolet radiation on the surface deterioration of scrimber composites with different densities and levels of resin content was investigated for this paper. The surface color, gloss, roughness, and wettability of the samples were investigated to determine the extent of surface changes due to accelerated ageing. The results indicated that all scrimber composites exhibited variation in the color of their surfaces during artificial xenon light exposure. After artificial accelerated ageing, the surface contact angle and roughness were found to increase, whereas the surface gloss and surface free energy decreased. Furthermore, it was observed that the density and resin content of the scrimber composites contributed to reductions in their color variation, wettability, and roughness during weathering, which suggested that the density and resin content played important roles in determining their surface photodegradation properties. Artificial ageing resulted in the degradation of lignin and hemicellulose, thus causing severe surface characteristics.
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MDPI and ACS Style
Bao, M.; Rao, F.; He, S.; Bao, Y.; Wu, Z.; Li, N.; Chen, Y. A Note on the Surface Deterioration of Scrimber Composites Exposed to Artificial Ageing. Coatings 2019, 9, 846.
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