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Effect of surface functionalization on mechanical properties and decomposition kinetics of high performance polyetherimide/MWCNT nano composites |
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| Affiliation: | 1. Department of Aerospace Engineering, Amrita University, Coimbatore 641112, Tamil Nadu, India;2. Centre of Excellence in Advanced Materials and Green Technology, Department of Chemical Engineering and Material Science, Amrita University, Coimbatore 641112, Tamil Nadu, India;3. Department of Polymer Materials, Gharda Chemicals Limited, Mumbai 421203, India;1. Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, South Korea;2. Division of Life Science, Korea Basic Science Institute, Daejeon 34133, South Korea;1. Institute for Biosensing, and College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road, Qingdao 266071, China;2. Joint Key Laboratory for Biosensors of Shangdong Province, Qingdao University, Ningxia Road, Qingdao 266071, China;1. Foundation for Research and Technology Hellas – Institute of Chemical Engineering Sciences (FORTH-ICE/HT), P.O. Box 1414, GR-26504 Rio-Patras, Greece;2. Nanothinx S.A., Stadiou Street, Platani, GR-26504 Rio-Patras, Greece |
| Abstract: | In this investigation, Polyetherimide (PEI) reinforced with multi-walled carbon nanotube (MWCNT) using novel melt blending technique. Surface of MWCNTs are modified by acid treatment as well as by plasma treatment. PEI nano composites with 2 wt% treated MWCNT shows about 15% improvement in mechanical properties when compared to unfilled PEI. The thermal decomposition kinetics of PEI/MWCNT nano composites has been critically analyzed by using Coats – Redfern model. The increase in activation energy for thermal degradation by 699 kJ/mol for 2 wt% MWCNT implies improvement in the thermal properties of PEI. Studies under Fourier Transform Infrared Spectroscopy (FTIR) and Transmission Electron Microscopy (TEM) depict significant interfacial adhesion with uniform dispersion of MWCNT in polymer matrix due to surface functionalization. 0.5 wt% chemically modified MWCNT shows typical alignment of MWCNT. There is a significant improvement in mechanical properties and thermal properties for surface functionalized MWCNT reinforced. |
| Keywords: | A. Nano composites B. Thermomechanical properties C. Mechanical properties D. Thermal analysis |
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