Publication: Thermo-molded biocomposite from cassava starch, natural fibers and lignin associated by laccase-mediator system
Issued Date
2013-07-01
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ISSN
01448617
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2-s2.0-84877060759
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Mahidol University
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SCOPUS
Bibliographic Citation
Carbohydrate Polymers. Vol.96, No.1 (2013), 109-117
Suggested Citation
Siritorn Narkchamnan, Chularat Sakdaronnarong Thermo-molded biocomposite from cassava starch, natural fibers and lignin associated by laccase-mediator system. Carbohydrate Polymers. Vol.96, No.1 (2013), 109-117. doi:10.1016/j.carbpol.2013.03.046 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/31524
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Title
Thermo-molded biocomposite from cassava starch, natural fibers and lignin associated by laccase-mediator system
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Abstract
Treatment of cellulose fibers and lignin by laccase-mediator system was conducted to enhance the binding efficiency of natural fibers and lignin compounds into cassava starch composite matrix. Violuric acid (VA) was tested for its effect as a mediator for laccase treatment. Influence of different fiber, lignin and water contents of biocomposite was statistically investigated. The results showed that adding 15% (w/w) fibers into biocomposite at 44% (w/w) water content increased flexural strength and modulus for 4 times compared with the control. A combination of fibers + VA gave the greatest enhancement of modulus for 1140% and flexural strength for 375.8% as much as neat starch biocomposite. The presence of fibers, lignin and VA as mediator for laccase treatment substantially enhanced water resistance of starch biocomposite detected by a change in water drop contact angle on biocomposite surface. © 2013 Elsevier Ltd. All rights reserved.