文献类型：期刊文献

英文题名：Comparative study of the photo-discoloration of moso bamboo (Phyllostachys pubescens Mazel) and two wood species

作者：Wang, Xiaoqing[1] Ren, Haiqing[1]

第一作者：王小青

通信作者：Wang, XQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2008

卷号：254

期号：21

起止页码：7029-7034

外文期刊名：APPLIED SURFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000258997700061)】；

基金：This study is funded by the sub-project of National Science & Technology Support Program of China (no. 2006BAD19B0403). The authors would like to acknowledge Mr. H. P. Yan for his suggestions, encouragements and supports during the FTIR experiments. The authors also express sincere gratitude to Mr. C. S. Li for helps in carrying out experiments.

语种：英文

外文关键词：moso bamboo; photo-discoloration; photo-degradation; color changes; FTIR; lignin

摘要：Bamboo or bamboo products undergo surface degradation during outdoor exposure resulting in lower quality in service. In this study, the effect of UV-vis light irradiation on changes in color and surface chemistry of moso bamboo (Phyllostachys pubescens Mazel) was investigated. For comparison purpose, two wood species (a soft and a hardwood) were also studied to present their differences in degradation performance. Color characterization was performed by measuring CIELab parameters (L*, a*, b* and Delta E*), and Fourier transform infrared (FTIR) spectroscopy was used to analyze the chemical changes induced by irradiation. The results showed that the surface color of bamboo changed rapidly during the irradiation process. Compared with the wood species, bamboo was less influenced by photo-irradiation. Chemical analysis indicated that irradiation altered the chemical structures of bamboo surfaces. Lignin was the most sensitive component to photo-degradation and the intensities of its characteristics bands decreased significantly during the irradiation process. This was accompanied by formation of new carbonyl groups at 1735 cm (1). The rate of lignin degradation and carbonyl formation in bamboo was relatively lower compared with the wood species. The color changes (DE*) was well correlated with lignin degradation and carbonyl formation regardless bamboo or the wood species. (C) 2008 Elsevier B. V. All rights reserved.