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3-D computational model of poly (lactic acid)/halloysite nanocomposites: Predicting elastic properties and stress analysis

Lookup NU author(s): Dr Kheng-Lim Goh

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Abstract

A real-structure based 3-D micromechanical computational model of poly (lactic acid) nanocomposites reinforced by randomly oriented halloysite nanotubes (HNTs) was developed and compared with an idealized model (conventional model) and experimental results. The developed idealized model consists of nanotubes with fixed aspect ratio and the proposed alternative real-structure based model takes the experimentally observed variations of HNTs sizes, impurities and aspect ratios into account. The requirements of the 3-D HNTs nanocomposite models have been explored by testing idealized, real structure based models, as well as models with hollow and solid cylinder-like reinforcements with varied amounts of HNTs. A unit cell model with cylindrical reinforcements (representing HNTs) and at least 30 inclusions gave promising results, provided the model includes actual information about HNT's size ranges and aspect ratios. Numerical studies were validated with experimental investigations and the developed real-structure based model gave more accurate results than idealized and analytical models. (C) 2014 Elsevier Ltd. All rights reserved.


Publication metadata

Author(s): De Silva RT, Pasbakhsh P, Goh KL, Mishnaevsky L

Publication type: Article

Publication status: Published

Journal: Polymer

Year: 2014

Volume: 55

Issue: 24

Pages: 6418-6425

Online publication date: 08/10/2014

Acceptance date: 23/09/2014

ISSN (print): 0032-3861

ISSN (electronic): 1873-2291

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.polymer.2014.09.057

DOI: 10.1016/j.polymer.2014.09.057


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