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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Curing and degradation processes of cement-bonded particleboard by supercritical CO2 treatment

Journal of Wood Science volume 57, pages 302–307 (2011)Cite this article

Abstract

This study examined the effects of supercritical CO2 treatment on the curing and degradation of cementbonded particleboard (CBP). Significant correlations were found between the supercritical CO2 treatment and mechanical properties during both curing and degradation processes. Internal bond (IB) strength, modulus of rupture (MOR), and modulus of elasticity (MOE) values of CBP achieved their maximums by supercritical CO2 treatment in 30 min. These conditions indicated that supercritical CO2 treatment accelerates the curing process rapidly and enhances the mechanical properties of the CBP. However, these values decreased in treatment from 60 min to 10 days and had a negative effect on board performance, indicating that supercritical CO2 treatment over a longer time span leads to degradation of the CBP. Furthermore, X-ray diffractometry (XRD), thermal gravimetry (TG-DTG), and scanning electron microscopy (SEM) observation clarified that the mechanisms of degradation are directly affected by the mineralogical composition of the system, in par ticular, by the calcium carbonate content as caused by carbonation.

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Authors and Affiliations

  1. Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan

    Rohny Setiawan Maail, Kenji Umemura & Shuichi Kawai

  2. Department of Forest Products Technology, Faculty of Agriculture, Pattimura University, Jl. Ir. M. Putuhena, Ambon, Indonesia

    Rohny Setiawan Maail

  3. Nichiha Corporation, Nagoya, Japan

    Hideo Aizawa

Authors
  1. Rohny Setiawan Maail
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  2. Kenji Umemura
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  3. Hideo Aizawa
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  4. Shuichi Kawai
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Correspondence to Rohny Setiawan Maail.

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Maail, R.S., Umemura, K., Aizawa, H. et al. Curing and degradation processes of cement-bonded particleboard by supercritical CO2 treatment. J Wood Sci 57, 302–307 (2011). https://doi.org/10.1007/s10086-011-1179-9

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  • DOI: https://doi.org/10.1007/s10086-011-1179-9

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