Abstract
This work is devoted to studying the wood–polymer composites (WPCs), which are processed by combining Moroccan pinaster (Pinus pinaster) and high-density polyethylene (HDPE) in virgin and recycled forms. The results show that the density increases as the wood content in WPC increases in the presence of 7wt% CaCO3. In addition, it was found that as the wood content in WPC increased, the water absorption and swelling at 2 h and 24 h increased. When using HDPE and 7wt% CaCO3 to develop WPC, the water absorption and swelling properties are reduced. The water saturation of the studied WPC was reached after 31 days. The scanning electron microscopy characterization of WPC samples showed that the morphology of the wood is affected by the polymer content and the amount of added CaCO3. This finding is well confirmed with the results of water absorption and thickness swelling. For all the manufactured composite materials in this work, the value of the diffusion constant n is very close to 0.5 and the water absorption is more likely to be close to the Fick behavior. The water diffusion coefficient in WPC decreases with the increase in polymer content and the addition of 7wt% of CaCO3.
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Lazrak, C., Kifani-Sahban, F., Hammi, M. et al. Effect studies of recycled polymer and CaCO3 to the moisture resistance of processed wood–polymer composites. J Indian Acad Wood Sci 20, 107–116 (2023). https://doi.org/10.1007/s13196-023-00314-1
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DOI: https://doi.org/10.1007/s13196-023-00314-1