文献类型：期刊文献

英文题名：Comparative studies on microstructures and chemical compositions of cell walls of two solid wood floorings

作者：Wang, Yurong[1,2] Su, Minglei[1] Sun, Haiyan[1,2] Ren, Haiqing[1]

第一作者：王玉荣

通信作者：Wang, YR[1];Wang, YR[2]|[a0005066e07bcca30717f]王玉荣;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100091, Peoples R China

年份：2018

卷号：64

期号：5

起止页码：501-508

外文期刊名：JOURNAL OF WOOD SCIENCE

收录：;EI(收录号：20182805542819);Scopus(收录号：2-s2.0-85049694964);WOS:【SCI-EXPANDED(收录号:WOS:000446490500004)】；

基金：Funded by National Natural Science Foundation of China (31370562), National Key Research and Development Project (2017YFD060020103).

语种：英文

外文关键词：Solid wood flooring; Microstructure; MFA; Crystallinity; Chemical composition

摘要：Two common wood flooring materials, taun (Pometia spp.) and cumaru (Dipteryx odorata), were used as investigated objects and comparison was made between the two wood species for their density, microstructure, microfibril angle (MFA), cellulose crystallinity and the main chemical composition. Results showed that the density of cumaru was 0.941gcm(-3), significantly larger than that of taun, 0.737gcm(-3). The biggest difference of two wood species in microstructures was fiber cells. Fiber cells of cumaru had dense cell walls, almost no cell lumens; while fiber cells of taun had relatively thin cell walls, with apparent cell lumens. The thickness of fiber cell wall of cumaru and taun were 6.80 and 2.82 mu m, respectively, and the former is about 2.5 times thicker than the latter. Measured data of MFA indicated that the average MFA of cumaru was 11.7 degrees, smaller than that of taun, 13.4 degrees. The relative crystallinity of cumaru and taun were 54.0 and 50.8%, respectively. The two wood species had the similar holocellulose contents, but the lignin content of cumaru was higher than that of taun, especially that the content of extractive of cumaru was as twice as that of taun.