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Thermal and hydrophobic properties of glycerol stearate-modified Pinus radiata wood

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Abstract

Glycerol stearate was synthesized by esterification with non-toxic, inexpensive glycerol and stearic acid. The composite of glycerol stearate and Pinus radiata wood was prepared by vacuum impregnation. By Fourier transform infrared (FTIR) analysis, there was the generation of new C=O stretching vibration band of glycerol stearate in comparison with stearic acid. This confirms that glycerol stearate was successfully synthesized. The weight gain, FTIR spectrum and morphological analyses of the composite indicate that glycerol stearate was impregnated into the interior lumina of the cells. Thermal analysis showed that the maximal degradation temperature of the composite was 42 °C higher than untreated wood. Contact angle images indicated that the value of the composite was 134.2°. Hydrophobicity (the repulsion of water) of the composite was stronger than glycerol stearate, which a large number of hydroxyl of wood reacted with the oxygen-containing groups of glycerol stearate, improved hydrophobicity and thermal stability, thereby enhancing the potential application of P. radiata wood.

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Authors and Affiliations

  1. College of Science, Northeast Forestry University, Harbin, 150040, People’s Republic of China

    Jia Xu, Bin Li, Tiqi Zhao, Tianyi Li & Lili Wang

Authors
  1. Jia Xu
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  2. Bin Li
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  3. Tiqi Zhao
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  4. Tianyi Li
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  5. Lili Wang
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Corresponding author

Correspondence to Lili Wang.

Additional information

Project funding: This study was funded by the Fundamental Research Funds for the Central Universities (No. 2572017CB24), and the Postdoctoral Scientific Research Starting Foundation of Heilongjiang Province (No. LBH-Q17004).

The online version is available at http://www.springerlink.com.

Corresponding editor: Yu Lei.

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Xu, J., Li, B., Zhao, T. et al. Thermal and hydrophobic properties of glycerol stearate-modified Pinus radiata wood. J. For. Res. 30, 1521–1525 (2019). https://doi.org/10.1007/s11676-018-0719-1

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  • DOI: https://doi.org/10.1007/s11676-018-0719-1

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