The effect of steam explosion on the production of sugarcane bagasse/polyester composites

被引:37
作者
Brugnago, Ricardo Jose [2 ]
Satyanarayana, Kestur Gundappa [1 ,3 ,4 ]
Wypych, Fernando [2 ]
Ramos, Luiz Pereira [2 ]
机构
[1] Acharya R&D Ctr, Acharya Inst Technol, Hesaraghatta Rd,Chikkabanasandra Post, Bangalore 560090, Karnataka, India
[2] Univ Fed Parana, Res Ctr Appl Chem CEPESQ, Dept Chem, BR-81531990 Curitiba, Parana, Brazil
[3] BMS Coll Engn, Bangalore & Poornaprajna Inst Sci Res, Bangalore, Karnataka, India
[4] Univ Fed Parana, Dept Chem, PIPE, BR-81531990 Curitiba, Parana, Brazil
关键词
Polymer matrix composites (PMCs); Surface treatment; Thermal properties; Chemical analysis; LIGNOCELLULOSIC FIBERS; BAGASSE FIBERS; MECHANICAL-PROPERTIES; MORPHOLOGY; BRAZIL; THERMOPLASTICIZATION; RESIDUES; BEHAVIOR;
D O I
10.1016/j.compositesa.2010.12.009
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper describes a pretreatment option to sugarcane bagasse fibers for their use in composite preparation with unsaturated polyester. Sugarcane bagasse fibers modified by (i) steam explosion and (ii) alkali washing after steam explosion, along with (iii) as-received bagasse fibers were characterized. Steam explosion significantly reduced the amount of hemicelluloses and acid-soluble lignin of bagasse fibers, while acid-insoluble lignin increased proportionally. Alkaline washing of steam-exploded fibers removed nearly 60% of their acid-insoluble lignin. Polyester matrix composites containing 10 wt.% of these fibers were prepared by compression molding. Density, thermal stability, water absorption and thermomechanical analysis of the composites containing steam explosion treated bagasse fibers showed improvement in these properties over those of the untreated fiber containing composite. These are explained in terms of the chemical modifications that occurred due to the steam explosion treatments. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:364 / 370
页数:7
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