Investigation of functional, physical, mechanical and thermal properties ofTiO2 embedded polyester hybrid composites: A design of experiment (DoE)study |
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Authors: | Muhammad Azeem Munawar Dirk Wolfram Schubert Shahzad Maqsood Khan Muhammad Atiq Ur Rehman Nafisa Gull Atif Islam Aneela Sabir Muhammad Shafiq Bilal Haider Mudassar Azam Saba Urooge Khan Monika M. Voigt |
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Affiliation: | 1. Institute of Polymer Materials, Friedrich-Alexander-University, Erlangen-Nuremberg, 91058 Erlangen, Germany;2. Bavarian Polymer Institute, Dr. Mack-Strasse 77, 90762 Fürth, Germany;3. Institute of Biomaterials, Friedrich-Alexander-University, Erlangen-Nuremberg, 91058 Erlangen, Germany;4. Department of Polymer Engineering and Technology, University of the Punjab, 54590 Lahore, Pakistan;5. Institute of Chemical Engineering and Technology, University of the Punjab, 54590 Lahore, Pakistan |
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Abstract: | This paper presents a study on the Design of Experiments (DoE) approach to optimize the fabrication parameters of titania (TiO2) embedded glass fiber reinforced polyester hybrid composites (HCs). HCs of unsaturated polyester resin (UPR) were fabricated using methyl ethyl ketone peroxide (MEKP) as the curing agent by hand lay-up process (HLUP) and compression molding technique (CMT). The fabrication parameters were optimized by Taguchi DoE (an orthogonal array of L25) using 3 control factors (concentration of TiO2, concentration of MEKP and curing temperature) having 5 levels each. Statistical tools were employed to identify significant factors affecting tensile strengths and its reproducibility during HLUP. It was found that the concentration of TiO2 in HCs significantly influenced the tensile strength (TS) followed by MEKP concentration and curing temperature. The highest value of TS was obtained at 3?wt% TiO2, 2?wt% MEKP and 80?°C. Nevertheless, the sensitivity of TiO2 concentration was basis for fabrication of polyester titania glass fiber hybrids (PTGFHs), which were further investigated for density and void fractions, linear shrinkage, flexural strength, impact strength, hardness and thermal behaviors. Moreover, cross-linking and hydrogen-bonding between polymeric chains, styrene, silica content of glass fiber and TiO2 particles in PTGFHs were confirmed by Fourier transform infrared spectroscopy. |
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Keywords: | Hybrid composites Polyester Design of experiment Titania |
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