Extraction of cellulose whiskers from cassava bagasse and their applications as reinforcing agent in natural rubber

被引：163

作者：

Pasquini, Daniel ^{[1
]}

Teixeira, Eliangela de Morais ^{[2
]}

da Silva Curvelo, Antonio Aprigio ^{[2
]}

Belgacem, Mohamed Naceur ^{[3
]}

Dufresne, Alain ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Inst Quim, BR-38400902 Uberlandia, MG, Brazil

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[3] Int Sch Paper Print Media & Biomat Pagora, Grenoble Inst Technol, F-38402 St Martin Dheres, France

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2010年 / 32卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

Cassava bagasse; Fibers; Whiskers; Starch; Nanocomposite; STARCH NANOCRYSTALS; CHITIN WHISKERS; NANOCOMPOSITES; POLYMERS;

D O I：

10.1016/j.indcrop.2010.06.022

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this work cassava bagasse, a by-product of cassava starch industrialization was investigated as a new raw material to extract cellulose whiskers. This by-product is basically constituted of cellulose fibers (17.5 wt%) and residual starch (82 wt%). Therefore, this residue contains both natural fibers and a considerable quantity of starch and this composition suggests the possibility of using cassava bagasse to prepare both starch nanocrystals and cellulose whiskers. In this way, the preparation of cellulose whiskers was investigated employing conditions of sulfuric acid hydrolysis treatment found in the literature. The ensuing materials were characterized by transmission electron microscopy (TEM) and X-ray diffraction experiments. The results showed that high aspect ratio cellulose whiskers were successfully obtained. The reinforcing capability of cellulose whiskers extracted from cassava bagasse was investigated using natural rubber as matrix. High mechanical properties were observed from dynamic mechanical analysis. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：486 / 490

页数：5