WOOD RESEARCH Volume 63, Number 3, 2018
Li Hui and Zhongfeng Zhang

Cultural and creative product design based on biology characteristics of wood

First, this article introduces the natural properties of wood. Wood not only has the unique wood texture, rich colours, but also has changeful shape and unique cultural attributes, what is why wood can be widely used in many fields. Secondly, the article briefly describes natural and cultural attributes, and analyzes the cultural connotation embodied in product design. The dual properties of wood meet the material and spiritual needs of people. Finally, by introducing the two cultural and creative products of writer designs to indicate the development of cultural products is a traditional material as well as the new era of the spiritual needs of the perfect combination of the way. It also plays a decisive role in reflect the wood for promoting cultural and creative product design.

WOOD RESEARCH Volume 64, Number 4, 2019
Xia Lei, Yuanbo Wu, Hongchang L., Xin Guo, Ruizhi Wen, and Li Hui

Study of the discoloration behaviour of teak wood (Tectona grandis Linn. fil.) caused by simulated sunlight

To investigate the discoloration behaviour of teak (Tectona grandis Linn. fil.) during irradiation, teak veneer specimens were exposed to xenon lamp light simulating sunlight for 80 h and subsequently analysed with a colorimeter. The colour changes were explained by recording Fourier transform infrared (FTIR) and gas chromatography-mass spectrometry (GC-MS) spectra at different exposure times. Forty hours of simulated irradiation marked a key point in the colorimetric analysis. During irradiation of 40 h, the increase in the CIELAB parameters ∆a* and ∆b* originated from the generation of carbonyl derivatives that were determined by FTIR analysis. Besides that, by combining GC-MS and microscopic analyses, the decrease in ∆L* in the first 20 h resulted from extractives migrating from the interior to the surface, and that the subsequent increase in ∆L* mainly arose from volatilization of the extractives. Additionally, the decrease in ∆b* after another 40 h of irradiation was mainly due to decreasing volatile extractive contents. Our conclusion reveals the causes of photo-induced discoloration in teak.