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Optimization of mechanical properties for polyoxymethylene/glass fiber/polytetrafluoroethylene composites using response surface methodology


Citation

Kunnan Singh, Jasbir Singh and Ching, Yern Chee and Abdullah, Luqman Chuah and Ching, Kuan Yong and Razali, Shaifulazuar and Seng, Neon Gan (2018) Optimization of mechanical properties for polyoxymethylene/glass fiber/polytetrafluoroethylene composites using response surface methodology. Polymers, 10 (3). pp. 1-25. ISSN 2073-4360

Abstract

This paper investigated the effects of polytetrafluoroethylene (PTFE) micro-particles on mechanical properties of polyoxymethylene (POM) composites. Since PTFE is immiscible with most polymers, the surface was etched using sodium naphthalene salt in tetrahydrofuran to increase its surface energy. The effects of two variables, namely PTFE content and PTFE etch time, on the mechanical properties of the composite were studied. Experiments were designed in accordance to response surface methodology (RSM) using central composite design (CCD). Samples were prepared with different compositions of PTFE (1.7, 4.0, 9.5, 15.0, or 17.3 wt %) at different PTFE etch times (2.9, 5.0, 10.0, 15.0, or 17.1 min). Four mechanical properties of the POM/GF/PTFE composites, that is, strength, stiffness, toughness, and hardness, were characterized as a function of two studied variables. The dependency of these mechanical properties on the PTFE etch conditions was analyzed using analysis of variance (ANOVA). Overall desirability, D global index, was computed based on the combination of these mechanical properties for POM/GF/PTFE composites. The D global index was found to be 87.5%, when PTFE content and PTFE etch time were 6.5% and 10 min, respectively. Good correlation between experimental and RSM models was obtained using normal probability plots.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.3390/polym10030338
Publisher: M D P I AG
Keywords: Polyoxymethylene; Polytetrafluoroethylene; Surface etch; RSM; Optimization
Depositing User: Mr. Sazali Mohamad
Date Deposited: 27 Nov 2019 04:08
Last Modified: 27 Nov 2019 04:08
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=/10.3390/polym10030338
URI: http://psasir.upm.edu.my/id/eprint/75162
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