Preparation and properties of HDPE/sugarcane bagasse cellulose composites obtained for thermokinetic mixer
Preparation and properties of HDPE/sugarcane bagasse cellulose composites obtained for thermokinetic mixer
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DOI：
10.1016/j.carbpol.2008.07.028
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发表时间：
2009-01
影响因子：
11.2
通讯作者：
D. Mulinari;H. Voorwald;M. Cioffi;M. I. P. D. Silva;S. Luz
中科院分区：
文献类型：
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作者：
D. Mulinari;H. Voorwald;M. Cioffi;M. I. P. D. Silva;S. Luz
天然纤维作为热塑性塑料增强材料的使用由于其低成本、环境保护的可能性和使用当地可获得的可再生资源而引起了很大的兴趣。研究了高密度聚乙烯/预处理改性甘蔗渣纤维素复合材料的力学性能和形态结构。通过热动力学混合器生产复合材料。复合材料断口的微观结构分析可以很容易地用显微技术来评价。结果表明，用氧氯化锆成功地对甘蔗渣纤维素进行了改性，并且这种高密度聚乙烯增强材料的拉伸强度高于未改性的甘蔗渣纤维素。甘蔗渣纤维素的改性直接影响复合材料的力学性能。这一点可以通过断口观察到，这表明改性纤维素甘蔗渣改善了纤维与基体之间的界面粘合。
The use of natural fibers as reinforcement for thermoplastics has generated much interest due to their low cost, possibility of environmental protection and use of locally available renewable resources. In this work the mechanical and morphological properties of high density polyethylene/pre-treated and modified residues from sugarcane bagasse cellulose composites were analyzed. Composites were produced by a thermokinetic mixer. The microstructural analyses of fracture surface from composites can be easily evaluated by microscopic techniques. Results showed that the modification of sugarcane bagasse cellulose with zirconium oxychloride was successfully accomplished and that this reinforcement material with high density polyethylene showed tensile strength higher than non-modified sugarcane bagasse cellulose. Modification in the sugarcane bagasse cellulose influenced directly in mechanical properties of the composite material. This can be observed by the fracture surface, which showed that modified cellulose sugarcane bagasse improved interfacial adhesion between fiber and matrix.