Influence of single-walled carbon nanotubes on the effective elastic constants of poly(ethylene terephthalate) |
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Authors: | T Gómez-del Río P Poza J Rodríguez MC García-Gutiérrez JJ Hernández TA Ezquerra |
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Affiliation: | 1. Departamento de Ciencia e Ingeniería de Materiales, Universidad Rey Juan Carlos, 28933 Móstoles, Madrid, Spain;2. Instituto de Estructura de la Materia, Soft Condensed Matter Group. CSIC, Serrano 121, 28006 Madrid, Spain |
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Abstract: | Poly(ethylene terephthalate) (PET) is one of the most extensively used thermoplastic polyesters out on the market, and it has been implemented in many forms. There has been limited work in the area of PET reinforced with single-walled carbon nanotubes (SWCNT) in mechanical properties. Nanocomposites based on PET with small contents of SWCNT were prepared by in situ polymerization. Elastic constants were determined by tensile tests performed on specimens instrumented with strain gauges. Assuming random orientation distribution of nanotubes, experimental Young’s modulus and Poisson’s ratio values were compared to some micromechanical models (Cox and Krenchel, Halpin–Tsai and Mori–Tanaka) which take into account orientation and aspect ratio of the nanotubes. However, the waviness of the nanotubes is a factor that influences the reinforcing efficiency. |
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Keywords: | A Carbon nanotubes A Nano composites B Mechanical properties C Elastic properties |
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