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Characterization of kenaf fiber composites prepared with tributyl citrate plasticized cellulose acetate
Affiliation:1. School of Aerospace, Mechanical, and Manufacturing Engineering, RMIT University, PO Box 71, 3083 Victoria, Australia;2. School of Applied Sciences, RMIT University, GPO Box 2476, 3001 Victoria, Australia;1. Institute for Polymers, Composites and Biomaterials—National Research Council, Via Campi Flegrei 34, Pozzuoli, 80078 Naples, Italy;2. Department of Chemical, Materials and Production Engineering, University of Naples, Piazzale Tecchio 80, 80125 Napoli, Italy;3. Department of Materials Engineering, Faculty of Technology, University of Amazonas, Av. General Rodrigo Octávio Jordão Ramos, 6200, Coroado I, 69077-000 Manaus, Brasil;1. Faculté Sciences & Sciences de l''ingénieur, Université de Bretagne-Sud (UBS), 2 rue Coat Saint-Haouen, 56100 Lorient, France;2. Grupo de Fisiología del Estrés en Plantas, Instituto de Investigaciones Biológicas (IIB), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Comisión de Investigaciones Científicas (CIC), Deán Funes 3250, B7602AYJ, Mar del Plata, Argentina;3. Grupo de Materiales Compuestos Termoplásticos (CoMP), Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería, Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Colón 10850, B7608FLC, Mar del Plata, Argentina;1. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China;2. Analytic and Testing Center of Sichuan University, Chengdu 610065, China;1. Natural Product Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, 785006, Assam, India;2. Department of Chemistry, Gauhati University, Guwahati, 781014, Assam, India
Abstract:Cellulose bio-composites have been formed with many matrix polymers; however, a cellulose based matrix offers advantages of enhanced compatibility and environmental conformity. The aim was to use cellulose acetate as matrix since it is readily soluble and more flexible compared with cellulose. Kenaf (Hibiscus cannabinus) was selected as the reinforcement material. Cellulose acetate was dissolved for solution impregnation of the fibers. Plasticized cellulose composites were prepared by addition of tributyl citrate (TBC) to cellulose acetate solutions prior to fiber impregnation. Composites were then compression molded for compaction and fabrication of the composites. The surface morphology, thermal stability and mechanical properties of the kenaf-cellulose acetate composites were characterized. Thermal stability of the composites was limited by evaporation of moisture and TBC, followed by elimination of acetic acid for cellulose acetate. Scanning electron microscopy provided a morphological examination of the composites. Mechanical property measurements demonstrated that modulus of cellulose acetate was increased by kenaf, though the composites were brittle without TBC plasticizer addition.
Keywords:A. Fibers  A. Polymer-matrix composites (PMCs)  D. Mechanical testing  Moisture resistance
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