Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate

Apart from achieving homogeneous Multiwall Carbon Nanotube (MWCNTs) dispersion in nanocomposites and preventing agglomeration of MWCNTs due to Van der Waals attraction forces, the main challenge here is to enhance the interfacial compatibility between MWCNTs and nonpolar polypropylene (PP). Therefor...

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Main Author: Bairan, Aninorbaniyah
Format: Thesis
Language:English
Published: 2018
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Online Access:http://eprints.utem.edu.my/id/eprint/23242/1/Effect%20Of%20Multiwall%20Carbon%20Nanotube%20Loading%20On%20Multi%20Filler%20Polymer%20Composite%20As%20Bipolar%20Plate%20-%20Aninorbaniyah%20Bairan%20-%2024%20Pages.pdf
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institution Universiti Teknikal Malaysia Melaka
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spellingShingle T Technology (General)
T Technology (General)
Bairan, Aninorbaniyah
Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
description Apart from achieving homogeneous Multiwall Carbon Nanotube (MWCNTs) dispersion in nanocomposites and preventing agglomeration of MWCNTs due to Van der Waals attraction forces, the main challenge here is to enhance the interfacial compatibility between MWCNTs and nonpolar polypropylene (PP). Therefore, the aim of this study was to identify the most effective and suitable ratio of MWCNTs loading through two mixing methods. The ratio of fillers and binder was fixed at 80:20, while the conductive fillers of MWCNTs (0% up to 10%), G (45% up to 55%) and CB was set to 25% of the weight percentage of G/CB/MWCNTs/PP composite. The multi filler of Graphite (G), Carbon Black (CB) and MWCNTs composite using a medium density polypropylene (MDPP) as binder was mixed through melt compounding method. The second mixing method is through dry mixing method by using MDPP and low density polypropylene (LDPP) as binders. The composite were fabricated through compression molding. The results included the characterization of electrical and mechanical properties and analysis of the hydrogen gas permeability and surface morphology of the composites. The effective MWCNTs loading is in the range of 5 wt.% up to 7 wt.% of MWCNTs and based on the two methods, melt compounding method is better than dry mixing method in terms of its electrical conductivity and mechanical properties. For melt compounding method, it was found that using MWCNTs as a third filler at a loading of 5 wt.% in a G/CB/MDPP composite produced higher results of in-plane electrical conductivity; 518.90 S/cm, the flexural strength, density and shore hardness 61.43 MPa, 1.61 g/cm3 and 65.1 (SH) respectively. Meanwhile, through dry mixing method for the MWCNTs/MDPP composite, the electrical conductivity is 158.32 S/cm with 6 wt.% MWCNTs content. The flexural strength of MWCNTs/MDPP increased from 22.95 MPa (3 wt.%) to 29.86 MPa (5 wt.%) with the increment of MWCNTs content. Results also indicated that there was no leaking gas occurred during the permeability test at 5 wt.% MWCNTs content for melt compounding and dry mixing (LDPP) and 6 wt. % MWCNTs for dry mixing (MDPP). These results confirm that melt compounding methods and the addition of MWCNTs lead to a significant improvement on the properties of the conducting polymer composite as bipolar plate.
format Thesis
qualification_name Master of Philosophy (M.Phil.)
qualification_level Master's degree
author Bairan, Aninorbaniyah
author_facet Bairan, Aninorbaniyah
author_sort Bairan, Aninorbaniyah
title Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
title_short Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
title_full Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
title_fullStr Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
title_full_unstemmed Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
title_sort effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate
granting_institution Universiti Teknikal Malaysia Melaka
granting_department Faculty of Mechanical Engineering
publishDate 2018
url http://eprints.utem.edu.my/id/eprint/23242/1/Effect%20Of%20Multiwall%20Carbon%20Nanotube%20Loading%20On%20Multi%20Filler%20Polymer%20Composite%20As%20Bipolar%20Plate%20-%20Aninorbaniyah%20Bairan%20-%2024%20Pages.pdf
_version_ 1776103119248162816
spelling my-utem-ep.232422023-08-03T11:58:26Z Effect of multiwall carbon nanotube loading on multi filler polymer composite as bipolar plate 2018 Bairan, Aninorbaniyah T Technology (General) TA Engineering (General). Civil engineering (General) Apart from achieving homogeneous Multiwall Carbon Nanotube (MWCNTs) dispersion in nanocomposites and preventing agglomeration of MWCNTs due to Van der Waals attraction forces, the main challenge here is to enhance the interfacial compatibility between MWCNTs and nonpolar polypropylene (PP). Therefore, the aim of this study was to identify the most effective and suitable ratio of MWCNTs loading through two mixing methods. The ratio of fillers and binder was fixed at 80:20, while the conductive fillers of MWCNTs (0% up to 10%), G (45% up to 55%) and CB was set to 25% of the weight percentage of G/CB/MWCNTs/PP composite. The multi filler of Graphite (G), Carbon Black (CB) and MWCNTs composite using a medium density polypropylene (MDPP) as binder was mixed through melt compounding method. The second mixing method is through dry mixing method by using MDPP and low density polypropylene (LDPP) as binders. The composite were fabricated through compression molding. The results included the characterization of electrical and mechanical properties and analysis of the hydrogen gas permeability and surface morphology of the composites. The effective MWCNTs loading is in the range of 5 wt.% up to 7 wt.% of MWCNTs and based on the two methods, melt compounding method is better than dry mixing method in terms of its electrical conductivity and mechanical properties. For melt compounding method, it was found that using MWCNTs as a third filler at a loading of 5 wt.% in a G/CB/MDPP composite produced higher results of in-plane electrical conductivity; 518.90 S/cm, the flexural strength, density and shore hardness 61.43 MPa, 1.61 g/cm3 and 65.1 (SH) respectively. Meanwhile, through dry mixing method for the MWCNTs/MDPP composite, the electrical conductivity is 158.32 S/cm with 6 wt.% MWCNTs content. The flexural strength of MWCNTs/MDPP increased from 22.95 MPa (3 wt.%) to 29.86 MPa (5 wt.%) with the increment of MWCNTs content. Results also indicated that there was no leaking gas occurred during the permeability test at 5 wt.% MWCNTs content for melt compounding and dry mixing (LDPP) and 6 wt. % MWCNTs for dry mixing (MDPP). These results confirm that melt compounding methods and the addition of MWCNTs lead to a significant improvement on the properties of the conducting polymer composite as bipolar plate. UTeM 2018 Thesis http://eprints.utem.edu.my/id/eprint/23242/ http://eprints.utem.edu.my/id/eprint/23242/1/Effect%20Of%20Multiwall%20Carbon%20Nanotube%20Loading%20On%20Multi%20Filler%20Polymer%20Composite%20As%20Bipolar%20Plate%20-%20Aninorbaniyah%20Bairan%20-%2024%20Pages.pdf text en public http://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=112768 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Mechanical Engineering 1. Akın, D., Kasgoz, A., and Durmus, A., 2014. Quantifying Microstructure, Electrical and Mechanical Properties of Carbon Fiber and Expanded Graphite Filled Cyclic Olefin Copolymer Composites. Composites Part A: Applied Science and Manufacturing, 60, pp. 44–51. 2. Antunes, R. A., de Oliveira, M.C.L., Ett, G., and Ett, V., 2011. Carbon Materials in Composite Bipolar Plates for Polymer Electrolyte Membrane Fuel Cells: A Review of the Main Challenges to Improve Electrical Performance. Journal of Power Sources, 196(6), pp. 2945–2961. 3. 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