Open Access
ARTICLE
A Primary Study on Mechanical Properties of Heat-Treated Wood via in-situ Synthesis of Calcium Carbonate
Dianen Liang1, Zhenhao Ding1, Qilin Yan1, Redžo Hasanagić2, Leila Fathi3, Zi Yang1, Longhao Li1, Jianbo Wang1, Houhua Luo1, Qian Wang1, Demiao Chu1,*
1
Key Lab of State Forest and Grassland Administration on “Wood Quality Improvement & High Efficient Utilization”, School of
Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China
2
Department of Wood Science and Technology, Faculty of Technical Engineering, University of Bihać, Bihać, Bosnia and
Herzegovina
3
Department of Natural Resources and Earth Science, Shahrekord University, Shahrekord, Iran
* Corresponding Author: Demiao Chu. Email:
(This article belongs to this Special Issue: Functionalization of Wood and Bamboo-Based Materials)
Journal of Renewable Materials 2023, 11(1), 435-451. https://doi.org/10.32604/jrm.2022.023214
Received 15 April 2022; Accepted 26 May 2022; Issue published 10 August 2022
Abstract
This study aims to improve the value of fast-growing wood and extend the heat-treated wood utilization using
inorganic calcium carbonate (CaCO
3) crystals via an in-situ synthesis method. CaCl
2 and Na
2CO
3 solutions with
a concentration ratio of 1:1 were successively introduced into the thermally modified poplar wood obtained by
steam heat treatment (HT) at 200°C for 1.5 and 3 h, resulting in the in-situ synthesis of CaCO
3 crystals inside
the heat-treated wood. The filling effect was best at the concentration of 1.2 mol/L. CaCO
3 was uniformly distributed in the cell cavities of the heat-treated wood, and some of the crystals were embedded in the fissures of the
wood cell walls. The morphology of CaCO
3 crystals was mainly spherical and rhombic polyhedral. Three main
types of CaCO
3 crystals were calcite, vaterite, and aragonite. The HT of poplar wood at 200°C resulted in degrading the chemical components of the wood cell wall. This degradation led to reduced wood mechanical properties,
including the surface hardness (HD), modulus of rupture (MOR), and modulus of elasticity (MOE). After CaCO
3
was in-situ synthesized in the heat-treated wood, the HD increased by 18.36% and 16.35%, and MOR increased by
14.64% and 8.89%, respectively. Because of the CaCO
3 synthesization, the char residue of the 200°C heat-treated
wood samples increased by 9.31% and the maximum weight loss rate decreased by 19.80%, indicating that the
filling with CaCO
3 cannot only improve the mechanical properties of the heat-treated wood but also effectively
enhance its thermal stability.
Graphical Abstract
Keywords
Cite This Article
Liang, D., Ding, Z., Yan, Q., Hasanagić, R., Fathi, L. et al. (2023). A Primary Study on Mechanical Properties of Heat-Treated Wood via
in-situ Synthesis of Calcium Carbonate.
Journal of Renewable Materials, 11(1), 435–451.