Abstract
This work aims to develop a continuum, multi-scale, physically-based model of the forming process for layered-silicate nanocomposites based on poly(ethylene terephthalate) (PET) matrices, as might be used for packaging. This challenge is tackled using: (1) a physically-based model of PET implemented into the FEM-based code ABAQUS, (2) RVEs with prescribed morphologies reflecting TEM images, and (3) nonlinear computational homogenisation. As a result, 2-D two-scale FEM-based simulations under biaxial deformations (constant width) enabled the extraction of macroscopic stress-strain curves at different silicate contents and processing temperatures. In particular, interesting features in terms of morphology changes and its impact on the macroscopic stress response were captured: (a) morphology change by particle re-orientation and pronounced bending, (b) macroscopic strain hardening due to platelet re-orientation and local strain stiffening, (c) facilitated platelet alignment, and platelet delamination in tactoids through sheardominated deformations and increasing temperature.
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References
Adams AM, Buckley CP, Jones DP (2000) Biaxial hot drawing of poly(ethylene terephthalate): Measurements and modelling of strain-stiffening. Polymer 41:771–786.
Bergström JS, Boyce MC (2000) Large strain time-dependent behaviour of filled elastomers. Mech. Mater. 32(11):627–644.
Kouznetsova V, Brekelmans WAM, Baaijens FPT (2001) An approach to micro-macro modeling of heterogeneous solids. Comp. Mech. 27:37–48.
Leonov AI (1976) Nonequilibrium thermodynamics and rheology of viscoelastic polymer media. Rheol. Acta 15(2):85–98.
Mullins L, Tobin NR (1965) Stress softening in rubber vulcanizates. Part I. Use of a strain amplification factor to describe the elastic behavior of filler-reinforced vulcanized rubber. J. Appl. Polymer Sci. 9:2993–3009.
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Figiel, L., Dunne, F.P., Buckley, C.P. (2009). Multiscale Modelling of Layered-Silicate/PET Nanocomposites during Solid-State Processing. In: Pyrz, R., Rauhe, J.C. (eds) IUTAM Symposium on Modelling Nanomaterials and Nanosystems. IUTAM Bookseries, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9557-3_3
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DOI: https://doi.org/10.1007/978-1-4020-9557-3_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-9556-6
Online ISBN: 978-1-4020-9557-3
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