Micromechanical modeling of the elastic properties of semicrystalline polymers: a three-phase approach
| Autor: | van Jaw Hans Dommelen, Leon Le Govaert, A Amin Sedighiamiri, van Tb Tim Erp, Gwm Gerrit Peters |
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| Přispěvatelé: | Processing and Performance, Mechanics of Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Length scale Materials science Polymers and Plastics Composite number Linear elasticity Polymer Condensed Matter Physics Amorphous solid Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science chemistry Phase (matter) Materials Chemistry Lamellar structure Physical and Theoretical Chemistry Composite material Elastic modulus |
| Zdroj: | Journal of Polymer Science, Part B: Polymer Physics, 48(20), 2173-2184. Wiley |
| ISSN: | 0887-6266 |
| DOI: | 10.1002/polb.22099 |
| Popis: | The mechanical performance of semicrystalline poly- mers is strongly dependent on their underlying microstructure, consisting of crystallographic lamellae and amorphous layers. In line with that, semicrystalline polymers have previously been modeled as two and three-phase composites, consisting of a crys- talline and an amorphous phase and, in case of the three-phase composite, a rigid-amorphous phase between the other two, hav- ing a somewhat ordered structure and a constant thickness. In this work, the ability of two-phase and three-phase composite models to predict the elastic modulus of semicrystalline polymers is investigated. The three-phase model incorporates an internal length scale through crystalline lamellar and interphase thick- nesses, whereas no length scales are included in the two-phase model. Using linear elastic behavior for the constituent phases, a closed form solution for the average stiffness of the inclusion is obtained. A hybrid inclusion interaction model has been used to compute the effective elastic properties of polyethylene. The model results are compared with experimental data to assess the capabilities of the two- or three-phase composite inclusion model. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 2173-2184, 2010 |
| Databáze: | OpenAIRE |
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