Citation: Hossein Pourrahmani, Mona Golparvar, Mohammad Fasihi. A New Evaluation Criterion for Optimizing the Mechanical Properties of Toughened Polypropylene/Silica Nanocomposites[J]. Chinese Journal of Polymer Science doi: 10.1007/s10118-020-2399-5 shu

A New Evaluation Criterion for Optimizing the Mechanical Properties of Toughened Polypropylene/Silica Nanocomposites

a.
Group of Energy Materials, École Polytechnique Fédérale de Lausanne, Sion 1951, Switzerland
b.
School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
c.
School of Mechanical Engineering, Braunschweig university of technology, Braunschweig 38106, Germany

Corresponding author: Mohammad Fasihi, mfasihi@iust.ac.ir
Received Date: 11 November 2019
Revised Date: 14 January 2020
Available Online: 15 April 2020

This study aims to experiment with the mechanical properties of polypropylene (PP)/thermoplastic elastomer/nano-silica/compatibilizer nanocomposite using the melt mixing method. The addition of polyolefin elastomers has proved to be an approachable solution for low impact strength of PP, while it would also reduce the Young′s modulus and tensile strength. That is why reinforcement would be applied to this combination to enhance the elastic modulus. The mechanical properties of the prepared composites were devised to train an artificial neural network to predict these properties of the system in 6256 unknown points. Therefore, the sensitivity analysis was performed and the share of each input parameter on the respective output values was calculated. Additionally, a novel parameter called nanocomposite evaluation criterion (NEC) is introduced to analyze the suitability of the nanocomposites considering the mechanical properties. Accordingly, the formulation with optimal mechanical properties of toughness, elongation at break, tensile strength, Young′s modulus, and impact strength was obtained.
- Nanocomposite,
- Polypropylene (PP),
- Silica,
- Artificial neural networks,
- Nanocomposite evaluation criterion (NEC),
- Sensitivity analysis
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