Open Access
ARTICLE
Study on the Effect of Two-Step Saturated Steam Heat Treatment Process on the Properties of Reconstituted Bamboo
Xin Han1,4, Zhichao Lou1,3,4,*, Chenglong Yuan1,4, Xinwu Wu1,4, Jie Liu1,4, Fujin Weng2, Yanjun Li1,4,*
1
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University,
Nanjing, China
2
Zhejiang Academy of Forestry Sciences, Hangzhou, China
3
Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology,
Beijing, China
4
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China
* Corresponding Authors: Yanjun Li. Email: ; Zhichao Lou. Email:
Journal of Renewable Materials 2022, 10(12), 3313-3334. https://doi.org/10.32604/jrm.2022.021066
Received 26 December 2021; Accepted 03 March 2022; Issue published 14 July 2022
Abstract
With the aim of utilizing reconstituted bamboo as a carbon cycle-oriented material, the improvement of physical
and mechanical properties has been actively studied to solve using problems. The saturated steam heat treatment
process has been widely used in worldwide. With the development and exploration of this technology, two-step saturated steam heat treatment process appears in some practical production, that is, after a period of saturated steam
heat treatment at a lower temperature, the bamboo bundles are taken out and seasoned for a period of time, and
then put back into the heat tank again, and heated at a higher temperature for another period of time. During the
two-step saturated steam heat treatment, the physical and mechanical properties of bamboo changed. However, the
mechanism of two-step saturated steam heat treatment has not been thoroughly discussed. For purpose that this
paper all discuss and find out the mechanism of two-step saturated steam heat treatment on the change of physical
and mechanical properties of reconstituted bamboo. In this work, the one and two-step saturated steam heat treatments were carried out according to the actual production parameters, and the physical and mechanical properties
of the reconstituted bamboo board made of treated bamboo bundles were analyzed, including the color change, the
thickness swelling (TS), modulus of elasticity (MOE), modulus of rupture (MOR) and shear strength. The results
indicate that two-step saturated steam heat treatment is better than one-step. Based on the detailed study of the
chemical composition, crystallinity and micro-morphological characteristics of the heated bamboo bundles, it is
further revealed that during two-step saturated steam heat treatment, oxygen air is added to the reaction system
between the two heat treatment processes to further catalyze the oxidation of hemicellulose and enhance the crystallinity of cellulose, so as to improve the properties of the final products. Our work has optimized the saturated steam
heat treatment process which is widely used in industry, pointing out a new idea in the experimental and theoretical
basis for the development of recombinant bamboo manufacturing industry.
Keywords
Cite This Article
APA Style
Han, X., Lou, Z., Yuan, C., Wu, X., Liu, J. et al. (2022). Study on the effect of two-step saturated steam heat treatment process on the properties of reconstituted bamboo. Journal of Renewable Materials, 10(12), 3313-3334. https://doi.org/10.32604/jrm.2022.021066
Vancouver Style
Han X, Lou Z, Yuan C, Wu X, Liu J, Weng F, et al. Study on the effect of two-step saturated steam heat treatment process on the properties of reconstituted bamboo. J Renew Mater. 2022;10(12):3313-3334 https://doi.org/10.32604/jrm.2022.021066
IEEE Style
X. Han et al., "Study on the Effect of Two-Step Saturated Steam Heat Treatment Process on the Properties of Reconstituted Bamboo," J. Renew. Mater., vol. 10, no. 12, pp. 3313-3334. 2022. https://doi.org/10.32604/jrm.2022.021066