Impact fracture behaviour of nylon 6-based ternary nanocomposites |
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| Authors: | Szu-Hui Lim Aravind Dasari Gong-Tao Wang Zhong-Zhen Yu Yiu-Wing Mai Qiang Yuan Songlin Liu Ming Shyan Yong |
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| Affiliation: | 1. Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering (J07), The University of Sydney, Sydney, NSW 2006, Australia;2. Beijing Key Laboratory on Preparation and Processing of Novel Polymeric Materials, Department of Polymer Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;3. CSIRO Manufacturing & Infrastructure Technology, Graham Road, Highett, P.O. Box 56, Vic. 3190, Australia;4. Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075, Singapore;1. Departamento de Ingeniería Química Industrial, ESIQIE, IPN, UPALM EDIF. 7, Zacatenco, México D.F. C.P. 07738, Mexico;2. Instituto Politécnico Nacional, Centro de Investigación en Computación, Av. Juan de Dios Batiz s/n, Col. Nueva Industrial Vallejo, México D.F. 07738, Mexico;3. Instituto Mexicano del Petróleo, Eje central Lázaro Cárdenas 152, Col. San Bartolo Atepehuacan, México D.F. C.P. 07730, Mexico;4. Instituto Tecnológico de Tuxtepec, Av. Dr. Victor Bravo Ahuja s/n, col. 5 de Mayo, C.P. 68350 Tuxtepec, Oaxaca, Mexico;1. Aalto University, School of Engineering, Department of Mechanical Engineering, Finland;2. Swiss Federal Institute of Technology Zürich (ETHZ), Switzerland;1. Bristol Composites Institute (ACCIS), University of Bristol, Queen’s Building, University Walk, Bristol BS8 1TR, UK;2. Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK;1. Tampere University of Technology, Laboratory of Materials Science, P.O. Box 589, FI-33101 Tampere, Finland;2. Aalto University, School of Engineering, Department of Mechanical Engineering, P.O. Box 14300, FI-00076 Aalto, Finland;3. Outotec Research Center, P.O. Box 69, 28101 Pori, Finland;1. Dept of Reinforced Concrete and Masonry Structures, Vilnius Gediminas Technical University, Sauletekio av. 11, LT-10223 Vilnius, Lithuania;2. Dept of Building Structures, Kaunas University of Technology, Studentu st. 48, LT-51367 Kaunas, Lithuania;3. Dept of Strength of Materials, Vilnius Gediminas Technical University, Sauletekio av. 11, LT-10223 Vilnius, Lithuania |
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| Abstract: | This study focuses on achieving high stiffness/strength and high fracture toughness in nylon 6/organoclay nanocomposites prepared via melt compounding by incorporating a maleic anhydride grafted polyethylene–octene elastomer (POE-g-MA) as a toughening agent. Mechanical test results indicated that the ternary nanocomposites exhibited higher stiffness than nylon 6/POE-g-MA binary blends at any given POE-g-MA content. More importantly, the brittle–ductile transition of nylon 6/POE-g-MA blends was not impaired in the presence of organoclay for the compositions prepared in this study. TEM analysis shows that organoclay layers and elastomer particles were dispersed separately in nylon 6 matrix. In the binary nanocomposite, no noticeable plastic deformation was observed around the crack tip. In the ternary nanocomposites, the presence of organoclay in the matrix provided maximum reinforcement to the polymer, while their absence in the elastomer particles allowed the latter to promote high fracture toughness via particle cavitation and subsequent matrix shear yielding. The partially exfoliated clay layers also delaminated and hence, adding to the total toughness of the nanocomposites. |
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