期刊
CARBOHYDRATE POLYMERS
卷 96, 期 1, 页码 109-117出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.03.046
关键词
Laccase-mediator treatment; Natural fibers; Lignin; Cassava starch biocomposite; Water resistance; Flexural strength and modulus
资金
- Mahidol University, Thailand
- Mahidol University Alumni Association, Thailand
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. (c) 2013 Elsevier Ltd. All rights reserved.
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