Bio-based composites from waste agricultural residues.

The main objective of this research was to study the potential of waste agricultural residues such as sunflower stalk, corn stalk and bagasse fibers as reinforcement for thermoplastics as an alternative to wood fibers. The effects of two grades (Eastman G-3003 and G-3216) of coupling agents on the mechanical properties were also studied. In the sample preparation, one level of fiber loading (30wt.%) and three levels of coupling agent content (0, 1.5 and 2.5wt.%) were used. For overall trend, with addition of both grades of the coupling agents, tensile, flexural and impact properties of the composites significantly improved, as compared with untreated samples. In addition, morphological study revealed that the positive effect of coupling agent on interfacial bonding. The composites treated with G-3216 gave better results in comparison with G-3003. This could be caused by the high melt viscosity of G-3003. In general, bagasse fiber showed superior mechanical properties due to its chemical characteristics.

[1]  A. Ashori,et al.  Preparation and Properties of Wood Plastic Composites Made of Recycled High-density Polyethylene , 2009 .

[2]  Y. Mai,et al.  Mechanical properties of wood flake–polyethylene composites. Part I: effects of processing methods and matrix melt flow behaviour , 2001 .

[3]  I. Choi,et al.  Biodegradability of bio-flour filled biodegradable poly(butylene succinate) bio-composites in natural and compost soil , 2006 .

[4]  J. Tesha,et al.  Some opportunities and challenges of producing bio-composites from non-wood residues , 2006 .

[5]  J. I. Escalante-García,et al.  Composite materials based on wastes of flat glass processing. , 2005, Waste management.

[6]  Bumjae Lee,et al.  Rice-husk flour filled polypropylene composites; mechanical and morphological study , 2004 .

[7]  Qinglin Wu,et al.  Rice straw fiber-reinforced high-density polyethylene composite: Effect of fiber type and loading , 2008 .

[8]  A. Błędzki,et al.  Thermoplastics Reinforced with Wood Fillers: A Literature Review , 1998 .

[9]  Douglas J. Gardner,et al.  Fundamental aspects of wood as a component of thermoplastic composites , 2003 .

[10]  M. Sain,et al.  Bioprocess preparation of wheat straw fibers and their characterization , 2006 .

[11]  A. Ashori,et al.  Mechanical behavior of agro-residue-reinforced polypropylene composites , 2009 .

[12]  E. Gamstedt,et al.  Stiffness Contribution of Various Wood Fibers to Composite Materials , 2006 .

[13]  Bumjae Lee,et al.  Effect of compatibilizing agents on rice-husk flour reinforced polypropylene composites , 2007 .

[14]  Paul Gatenholm,et al.  The nature of adhesion in composites of modified cellulose fibers and polypropylene , 1991 .

[15]  B. Kokta,et al.  Thermoplastic composties of polystyrene: Effect of different wood species on mechanical properties , 1989 .

[16]  Devrim Balköse,et al.  The effect of fiber surface treatments on the tensile and water sorption properties of polypropylene–luffa fiber composites , 2006 .

[17]  R. Rowlands,et al.  Effects of wood fiber characteristics on mechanical properties of wood/polypropylene composites , 2003 .

[18]  Z. Wang,et al.  Effects of cross-linking on mechanical and physical properties of agricultural residues/recycled thermoplastics composites , 2009 .

[19]  Y. Çöpür,et al.  Some chemical properties of hazelnut husk and its suitability for particleboard production , 2007 .

[20]  A. Ashori.  Municipal Solid Waste as a Source of Lignocellulosic Fiber and Plastic for Composite Industries , 2008 .

[21]  A. S. Luyt,et al.  Thermal and mechanical properties of polypropylene–wood powder composites , 2006 .

[22]  Kin Liao,et al.  Effects of environmental aging on the mechanical properties of bamboo–glass fiber reinforced polymer matrix hybrid composites , 2002 .

[23]  Amir Nourbakhsh,et al.  Characteristics of wood-fiber plastic composites made of recycled materials. , 2009, Waste management.

[24]  J. Sameni,et al.  Effects of processing parameters and graft-copoly(propylene/maleic anhydride) on mechanical properties of thermoplastic natural rubber composites reinforced with wood fibres , 2002 .