Thermo-molded biocomposite from cassava starch, natural fibers and lignin associated by laccase-mediator system

被引：20

作者：

Narkchamnan, Siritorn ^{[1
]}

Sakdaronnarong, Chularat ^{[1
]}

机构：

[1] Mahidol Univ, Fac Engn, Dept Chem Engn, Putthamonthon 73170, Nakorn Pathom, Thailand

来源：

CARBOHYDRATE POLYMERS | 2013年 / 96卷 / 01期

关键词：

Laccase-mediator treatment; Natural fibers; Lignin; Cassava starch biocomposite; Water resistance; Flexural strength and modulus; CELLULOSE; DEGRADATION;

D O I：

10.1016/j.carbpol.2013.03.046

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：109 / 117

页数：9

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