Thermal behavior of extracted and delignified pine wood flour

Yao Chen; Mandla A. Tshabalala; Jianmin Gao; Nicole M. Stark; Yongming Fan; Rebecca E. Ibach

doi:10.1016/j.tca.2014.06.012

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Thermal behavior of extracted and delignified pine wood flour

Formally Refereed

Authors:

Yao Chen, Mandla A. Tshabalala, Jianmin Gao, Nicole M. Stark, Yongming Fan, Rebecca E. Ibach

Year:

2014

Type:

Scientific Journal

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.1016/j.tca.2014.06.012

Source:

Thermochimica Acta Volume 591, 2014; pp. 40–44.

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Abstract

To investigate the effect of extractives and lignin on the thermal stability of wood flour (WF), thermogravimetric analysis was used to determine thermal degradation behavior of extracted and delignified mixed pine WF. The contribution of lignin to thermal stability was greater than that of extractives. Removing extractives resulted in improved thermal stability by increasing onset temperature T₀, and solvents with greater polarity contributed more to increasing T₀. However, solvent extraction had less effect on decomposition temperature (T₂) than did delignification, which significantly decreased T₂. A shoulder peak was observed only in delignified WF. Acetone/water extraction, hot-water extraction, and delignification are all significant model terms for variation in T₀; delignification is the most significant factor affecting T₀, and T₂.

Keywords

Thermal stability, Extractives, Lignin, Delignified, Pine wood flour

Citation

Chen, Yao; Tshabalala, Mandla A.; Gao, Jianmin; Stark, Nicole M.; Fan, Yongming; Ibach, Rebecca E. 2014. Thermal behavior of extracted and delignified pine wood flour. Thermochimica Acta Volume 591, 2014; pp. 40–44.