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Journal of Wood Science

, Volume 64, Issue 5, pp 501–508 | Cite as

Comparative studies on microstructures and chemical compositions of cell walls of two solid wood floorings

  • Yurong Wang
  • Minglei Su
  • Haiyan Sun
  • Haiqing Ren
Original Article

Abstract

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 0.941 g·cm−3, significantly larger than that of taun, 0.737 g·cm−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 µm, 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°, smaller than that of taun, 13.4°. 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.

Keywords

Solid wood flooring Microstructure MFA Crystallinity Chemical composition 

Notes

Acknowledgements

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

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Copyright information

© The Japan Wood Research Society 2018

Authors and Affiliations

  1. 1.Research Institute of Wood IndustryChinese Academy of ForestryBeijingPeople’s Republic of China
  2. 2.Research Institute of Forestry New TechnologyChinese Academy of ForestryBeijingPeople’s Republic of China

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