PSI - Issue 17

Anurag Singh et al. / Procedia Structural Integrity 17 (2019) 857–864 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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The addition of pristine nanotubes to the bio-based resin, object of investigation, lead to a decrease of mechanical properties but to a significant increase of the electrical conductivity (decrease of the surface resistance). By means of the proposed functionalization, the mechanical properties of the nanocomposites showed higher values: particularly the retention of the mechanical properties and of the electrical surface resistance, was obtained for a wt% content of 0.25. Nevertheless, for higher content of functionalized MWCNTs a further decrease of the mechanical properties and an increase of the electrical surface resistance was observed. The improvement of multifunctional properties is a complex aspect that requires investigation on the typology and original properties of selected nanofillers, the mechanism for improving interfacial covalent bonding between functionalized nanotubes and epoxy resin matrix, as well as, on the scale-up of the nanocomposites. Thus, further studies are required for obtaining the simultaneous improvement of mechanical and electrically conductive properties of the investigated type of functionalised MWCNTs filled bio-based resin system. 6. Acknowledgement This research was developed within the ECO-COMPASS project and has received the funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 690638 7. References Chu, Chien Chia et al. 2012. “Electrical Conductivity and Thermal Stability of Polypropylene Containing Well Dispersed Multi- Walled Carbon Nanotubes Disentangled with Exfoliated Nanoplatelets.” Carbon 50(12): 4711 – 21. GRADY, BRIAN P. 2011. Materials Engineering CARBON NANOTUBE – POLYMER COMPOSITES, Manufacture, Properties, and Applications . Guo, Miaocai, Xiaosu Yi, Gang Liu, and Lipeng Liu. 2014. “Simultaneously Increasing the Electrical Conductivity and Fracture Toughness of Carbon-Fiber Composites by Using Silver Nanowires-Loaded Inte rleaves.” Composites Science and Technology 97: 27 – 33. Hirsch, a, and O Vostrowsky. 2005. “Functionalization of Carbon Nanotubes.” Functional Molecular Nanostructures 245: 193 – 237. Iijima, Sumio. 1991. “Helical Microtubules of Graphitic Carbon.” Nature 354(6348): 56 – 58. Kathi, John, Kyong- Yop Rhee, and Joong Hee Lee. 2009. “Effect of Chemical Functionalization of Multi -Walled Carbon Nanotubes with 3-Aminopropyltriethoxysilane on Mechanical and Morphological Properties of Epoxy Nanocomposites.” Composites Part A: Applied Science and Manufacturing 40(6 – 7): 800 – 809. Ma, Peng-Cheng, Shan-Yin Mo, Ben-Zhong Tang, and Jang- Kyo Kim. 2010. “Dispersion, Interfacial Interaction and Re- Agglomeration of Functionalized Carbon Nanotubes in Epoxy Composites.” Carbon 48(6): 1824 – 34. Maxim N. Tchoul, † et al. 2007. “Effect of Mild Nitric Acid Oxidation on Dispersability, Size, and Structure of Single- Walled Carbon Nanotubes.” Men, Xue Hu et al. 2008. “Functionalization of Carbon Nanotubes to Improve the Tribological Properties of Poly(Furfuryl Alcohol) Composite Coatings.” Composites Science and Technology 68(3 – 4): 1042 – 49. Osorio, A.G., I.C.L. Silveira, V.L. Bueno, and C.P. Bergmann. 2008. “H2SO4/HNO3/HCl— Functionalization and its Effect on Dispersion of Carbon Nanotubes in Aq ueous Media.” Applied Surface Science 255(5): 2485 – 89. Ramon, Eric, Carmen Sguazzo, and Pedro Moreira. 2018. “A Review of Recent Research on Bio -Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector.” Aerospace 5(4): 110. Sahoo, Nanda Gopal et al. 2010. “Polymer Nanocomposites Based on Functionalized Carbon Nanotubes.” Progress in Polymer Science 35(7): 837 – 67. Singh, Anurag. 2014. “ Processing , characterization and sliding wear behavior of functionalized carbon nanotube reinforced epoxy matrix2 Master of Technology in Production Engineering By Anurag Singh Department of Mechanical Engineering National Institute of Technology , Rourke.” National Institute of Technology Rourkela (June): 1 – 79. White, Kevin L., and H.- J. Sue. 2011. “Electrical Condu ctivity and Fracture Behavior of Epoxy/Polyamide 12/Multiwalled Carbon Nanotube Composites.” Polymer Engineering & Science 51(11): 2245 – 53.