文献类型：期刊文献

英文题名：Influences of Thermo-Vacuum Treatment on Colors and Chemical Compositions of Alder Birch Wood

作者：Yang, Yan[1,2] Zhan, TianYi[1] Lu, Jian Xiong[1] Jiang, Jing Hui[1]

第一作者：Yang, Yan

通信作者：Lu, JX[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]SouthWest Forestry Univ, Coll Mat Engn, Kunming 650224, Yunnan Province, Peoples R China

年份：2015

卷号：10

期号：4

起止页码：7936-7945

外文期刊名：BIORESOURCES

收录：;EI(收录号：20212410502164);Scopus(收录号：2-s2.0-84988543277);WOS:【SCI-EXPANDED(收录号:WOS:000366990800129)】；

基金：The authors are grateful for the support of National "12th Five Year" Science and Technology support program (Project No. 2012BAD24B02) and Yunnan Provincial Education Department Project (Project No. 2015Y293), "Research and demonstration of the added manufacturing technology of furniture decoration materials and outdoor materials."

语种：英文

外文关键词：Alder Birch; Thermo-Vacuum Treatment (TVT); Wood color; Chemical composition

摘要：With high temperature-heat treatment, the dimensional stability and durability of wood is improved and wood color is darkened as well. In this paper, alder birch wood (Betula alnoides) was treated by the Thermo-Vacuum Treatment (TVT). The changes of wood color parameters and the chemical composition were determined by the CIE1976 L(star)a(star)b(star) method and the chemical analysis method, respectively. The results were revealed as follows: (1) A lower value of lightness, L-star, and a higher value of total color difference, Delta E-star, were obtained at the higher heat-treatment temperatures and longer treatment time. (2) The higher the heat-treatment temperatures and the longer the heat-treatment times were, the lower the contents of hemicellulose and cellulose were and the higher the content of lignin was. Moreover, Fourier Transform infrared spectroscopy (FTIR) analysis demonstrated that the characteristic absorption peaks of cellulose, hemicellulose, and lignin diminished. The acetylation reaction of hemicellulose and the degradation reaction of groups of lignin side chain occurred during TVT. (3) TVT degraded the chemical composition of cell walls, which resulted in further changes of the wood color. A significant correlation existed between the differences of color indices and the differences of the chemical composition after TVT.