Effect of Heat Treatment on Chemical Structure of a Bio-Filler from Vetiver Grass

Abstract:

In this work, the effect of heat treatment on chemical and crystalline structure of vetiver powder was studied. The vetiver powder was heat treated at 170°C, the temperature below thermal decomposition of hemicellulose, for 2-6 hours. The chemical structure, crystalline structure, and thermal decomposition of untreated and heat-treated vetiver were examined via FTIR spectrometer X-ray diffractometer, and thermogravimetric analyzer, respectively. In addition, the particle size and size distribution, fiber surface, and specific surface area were investigated by particle size analyzer, scanning electron microscope, and BET surface analyzer, repectively. It was founded that some waxes, lignin, and hemicellulose were removed by the thermal treatment. This resulted in smaller particle size of heat-treated vetivers. In addition, moisture content was minimized from 7 to 4 wt% by the treatment. However, removal of those compositions did not influence crystal structure of cellulose and surface functional groups of heat-treated vetiver.

• Periodical: Advanced Materials Research (Volume 410)
• Pages: 71-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.410.71
• Online since: November 2011
• Authors: Wimonlak Sutapun, Yupaporn Ruksakulpiwat, Nitinat Suppakarn
• Keywords: Bio-Filler, Heat Treatment, Lignocellulosic Fiber, Natural Fiber, Vetiver

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