Chaishome, Jedsada

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Chaishome, Jedsada
Alternative Name
Chaishome, J.
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jedsada.ch@kmitl.ac.th

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    Item type:Publication,
    Thermal degradation of flax fibres as potential reinforcement in thermoplastic composites
    (2014-03-19)
    Chaishome, J.
    ;
    Brown, K. A.
    ;
    Brooks, R.
    ;
    Clifford, M. J.
    This work reports on a study of thermal degradation of flax fibres to gain an improved understanding of the use and limitations of flax fibres as reinforcement for thermoplastic composites manufactured by the vacuum forming process. The effect of heating on chemical decomposition and thermal stability was performed, using fourier transform infrared spectrometry (FTIR) and thermogravimetry (TG) techniques. In addition, the characterisation of micro structures of failure surface following tensile testing of the composites was conducted. The results show that the hemicelluloses decomposition of flax fibres during thermal degradation is a factor to have the detrimental effect on the thermal stability of fibres, particularly with low heating rate. The present investigation, A decrease of hemicellulose and pectin content of the fibres, a decrease of consolidation temperature and an increase of heating rate during the manufacturing of flax fibre thermoplastic composites should improve their mechanical performance. © (2014) Trans Tech Publications, Switzerland.
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    Item type:Publication,
    Effect of alkaline treatment on decomposition temperature of fibres from empty oil palm bunch
    (2019-01-01)
    Chaishome, Jedsada
    ;
    Nunak, Navaphattra
    —This article reports an investigation of the decomposition temperature of fibres from empty oil palm bunch to achieve improved understanding of the processing temperature limitation of this fibre as reinforcement for thermoplastic composite manufacturing. The effect of alkaline treatments on their chemical decomposition and sample weight changes were performed, using fourier transform infrared spectrometry (FTIR) and thermogravimetry (TG) techniques. The results show that the hemicellulose removal of fibres after treatment is a factor that provides an advantage on the thermal stability of the fibres. Both initial decomposition temperature (T<inf>0</inf>) and maximum decomposition temperature (T<inf>max</inf>) are minor increase. This could reduce the detrimental effect of thermal degradation on the single fibre performance and leads to shift its consolidation temperature ceiling from below 221<sup>o</sup>C (untreated fibres) to 243<sup>o</sup>C (5% NaOH treated fibres) during composite consolidation.