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      Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment

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          Abstract

          Rice flour was modified with water and glycerol in single-screw extruder to obtain bioplastic of low manufacturing cost. Sisal fibers were used as reinforcing fillers to enhance rice flour-based bioplastic properties. The effects of short sisal fiber content (5 to 20 wt.%), length (0.2 to 6 mm) and alkali treatment (5% w/v NaOH) on the moisture content, tensile properties, impact properties, dynamic mechanical properties and morphology of the biocomposites were studied. The results showed that incorporation of the sisal fibers with a fixed fiber length into the bioplastics improved moisture resistance, tensile strength, impact strength and storage modulus, and that the improvement level increased with increasing sisal fiber content. The optimum reinforcement was achieved at 20 wt.% of fiber loading and 4 mm long fibers. The tensile strength of the biocomposite was about 4 times more than that of the neat rice flour-based bioplastic. The use of 5% NaOH aqueous solution further improved the moisture resistance and mechanical properties of the biocomposites, mainly resulting from better interfacial adhesion between the sisal fiber and rice flour matrix. Furthermore, the performance of the rice flour-based bioplastics synergistically combined with the sisal fibers suggests that they have great potential in development of environmentally friendly/sustainable biomaterial products from renewable resources.

          Most cited references35

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          The elasticity and strength of paper and other fibrous materials

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            Surface modifications of natural fibers and performance of the resulting biocomposites: An overview

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              Water sorption and mechanical properties of cassava starch films and their relation to plasticizing effect

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                2009
                : 24
                : 3
                : 272-279
                Affiliations
                1 Department of Rubber Technology and Polymer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, Thailand
                2 Department of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla, Thailand
                3 Department of Physics, Faculty of Science, Silpakorn University, Nakhon Prathom, Thailand
                Author notes
                Mail address: Natinee Lopattananon, Department of Rubber Technology and Polymer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, Thailand, 94000. E-mail: lnatinee@ 123456bunga.pn.psu.ac.th
                Article
                IPP2258
                10.3139/217.2258
                6ee2db61-f021-4aa7-8dd8-ce21eadf769f
                © 2009, Carl Hanser Verlag, Munich
                History
                : 07 January 2009
                : 02 March 2009
                Page count
                References: 37, Pages: 8
                Categories
                Regular Contributed Articles

                Polymer science,Materials technology,Materials characterization,General engineering,Polymer chemistry

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