Characterization of Tectona grandis Extractives by GC-MS and IR and their Infusion into Rubberwood to Modify Dimensional Stability
文献类型： 外文期刊
作者： Li, Tongtong 1 ; Li, Guanjun 1 ; Lu, Quanji 1 ; Zhou, Jiannan 1 ; Li, Min 1 ; Zhang, Shixin 1 ; Li, Jianing 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Danzhou 571737, Hainan, Peoples R China
关键词： Dimensional stability;Extractives;GC-MS;Rubberwood;Teak
期刊名称：BIORESOURCES （ 影响因子：1.614； 五年影响因子：1.923 ）
ISSN： 1930-2126
年卷期： 2017 年 12 卷 3 期
页码：
收录情况： SCI
摘要： Teak (Tectona grandis) has been popularly known in the wood industry as a precious material due to its natural dimensional stability. To explore the main components affecting the dimensional stability of teak wood, the teak wood samples were extracted with different polar solvents, and the extractives were impregnated into rubberwood specimens to determine their effect on the dimensional stability of the modified rubberwood. The results showed that the methanol extractives of the teak wood exhibited the most significant effect on the dimensional stability of the rubberwood. The extractives were characterized by infrared (IR) and gas chromatograph/mass spectrum (GC/MS). The GC/MS results showed that the methanol extractives primarily contained 9,10-anthracenedione, 1,1-dimethyl-3,4-bis(1-methylethenyl), and alcohol compounds. It was speculated that the alcohol compounds in the methanol extractives reacted with polar hydroxyl groups in the cell wall, which resulted in a decrease in the size of the site combined with bound water. Moreover, the hydrophobic hydrocarbon compound was impregnated into rubberwood to form a thin layer of protective film in the cells into which the water could not enter under 20 degrees C and 80% RH.
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