Tensile and fracture behaviour of PP/wood flour composites |
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| Authors: | Ezequiel Pérez Lucía Famá SG Pardo MJ Abad Celina Bernal |
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| Affiliation: | 1. Advanced Materials Group, INTECIN (UBA-CONICET), Department of Mechanical Engineering, Engineering Faculty, University of Buenos Aires, Av. Paseo Colón 850, C1063ACV Buenos Aires, Argentina;2. Grupo de Polímeros, Univ. A Coruña (UDC), Av. 19 de Febrero, s/n, 15405 Ferrol, Spain;3. Centro Galego do Plástico (CGaP), A Cabana s/n, 15590 Ferrol, Spain;1. College of Science, Technology & Engineering, James Cook University, QLD 4811, Australia;2. Fibercon, QLD 4051, Australia;1. Civil Engineering Materials Research Laboratory, Brunel University, UB8 3PH London, UK;2. Department of Mechanical Engineering, University of New Orleans, LA 70148, USA;1. INEGI, Rua Dr. Roberto Frias, 400 4200-465, Porto, Portugal;2. Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal;3. Materials Performance Group, Materials Science and Engineering Department, Universidad Carlos III de Madrid, Leganés, Spain;4. Griffith School of Engineering, Griffith University (Gold Coast Campus), Building G39 Room 2.22, Parklands Drive, Southport, Queensland 4214, Australia |
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| Abstract: | Polypropylene/wood flour composites with different fibre content were prepared. The effect of composition and the incorporation of maleinated polypropylene on the materials tensile and fracture and failure behaviour was investigated. Reliable fracture toughness data that will be useful for structural applications were obtained. In unmodified composites an increase in Young´s modulus was found with the addition of wood flour to PP, whereas tensile strength, strain at break and fracture toughness were observed to decrease as fibre content increased. The presence of MAPP was beneficial to tensile strength and ductility and had no significant effect on fracture toughness, as a result of enhanced fibre dispersion within the matrix and improved interfacial adhesion. Although reduced ductility and toughness were observed for the composites respect to the matrix, in the case of modified composites, environmentally friendly stiffer materials were obtained with cost saving without sacrificing strength. |
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