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008 120110t2010 my a f m 000 0 eng d
020 _aTHE0005028(Local)
039 9 _a201905140920
_bSHAHRILJ
_y201201101310
_zFida
040 _aUMP
090 _aTS933.L5 I99 2010 rs Bc.
100 0 _aMuhammad ‘Izzat Saidon
245 1 0 _aModification of lignin content in wood fiber by microwave heating and laccase treatment /
_cMuhammad ‘Izzat Saidon
260 _aKuantan, Pahang :
_bUMP,
_c2010
300 _axvi, 73 p. :
_bill. ;
_c30 cm. +
_e1 CD-ROM
502 _aProject paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010
504 _aBibliography : p. [57]-66
520 3 _aOxidoreductases and by microwave heating can be applied for bonding of fiberboards. The objectives of this research are to modify the lignin content of wood fibers by using enzymatic treatments and by microwave heating treatments to make binderless boards and to determine the use of laccase treatment and by microwave heating can give promise and possibilities for industrial bonding and modification of lignin. In this research, the fiberboards were prepared from four different treatments which are untreated, UF-resin treated, microwave heating treated and laccase treated 6U/g fiber boards. Hot pressing at constant 200°C and 4 minutes pressing was done to form the boards. For each treatment the boards were tested for modulus of elasticity (MOE), modulus of rupture (MOR) and internal bond strength (IB). From the results obtained, the microwave heating treated boards displayed quite comparable in average mechanical property within the UF-resin treated (standard) boards meanwhile for laccase treatment of fibers, it displayed the lowest MOR and MOE values. As a conclusion, the microwave heating treatment shows promise and possibilities for industrial bonding and modification of lignin content in wood fiber. However, the laccase treatment can be potentially improved through extensively studies in future regarding on the use of laccase for adhesion enhancement in binderless wood boards because it had been proved on recent studies that laccase used resulting in boards with good mechanical properties without toxic synthetic adhesives. For recommendation, in future, research regarding wood modification in lignin content by microwave heating and enzyme treatment could be optimized and enhance by variances of a number of process parameters such as temperature, time pressing, pressure and moisture content
650 0 _aLignin
650 0 _aWood
_xChemistry
999 _aVIRTUA40
_c3098
_d3104
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