EMI shielding and dynamic mechanical analysis of graphene oxide-carbon nanotube-acrylonitrile butadiene styrene hybrid composites |
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| Institution: | 1. Advanced Carbon Products, CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India;2. Academy of Scientific & Innovative Research (AcSIR), India;3. Centre for Polymer Science & Engineering, Indian Institute of Technology, New Delhi 110016, India;4. Department of Aeronautics and Astronautics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;1. CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India;2. Academy of Scientific & Innovative Research (AcSIR), India;1. Universidade Federal de Santa Catarina, Departamento de Engenharia Mecânica, Florianópolis, SC, Brazil;2. Departamento De Engenharia Metalúrgica E De Materiais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil;3. École de technologie supérieure de Montréal, Mechanical Engineering Department, Montreal, QC, Canada;1. CSIR-National Physical Laboratory, New Delhi 110 012, India;2. Department of Mechanical Engineering and Materials Science, Rice University, Houston, TX 77005, United States;3. TIFR-Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad 500 075, India;4. Advanced Functional Thin Films Department, Surface Technology Division, Korea Institute of Materials Science, Gyeongnam 642831, Republic of Korea;5. Department of Physics, University of Rajasthan, Jaipur 302 055, India;6. Department of Physics & Astrophysics, University of Delhi, Delhi 110 007, India |
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| Abstract: | Carbon nanomaterials such as carbon nanotubes (CNTs), graphene and their hybrid have been studied extensively. Despite having excellent properties of CNTs and graphene have not yet been fully realized in the polymer composites. During fabrication agglomeration of CNTs and restacking of graphene is a serious concern that results in the degradation of properties of nanomaterials into the final composites. To improve the dispersion of CNTs and restacking graphene, in the present research work, we focused on the hybridization of graphene oxide and CNTs. Multiwalled carbon nanotubes (MWCNTs), functionalized carbon nanotubes (FCNTs), and graphene oxide-carbon nanotubes (GCNTs) reinforced acrylonitrile butadiene styrene (ABS) composites were prepared separately by vacuum filtration followed by hot compression molding. Further, dynamic mechanical analysis (DMA), and electromagnetic interference (EMI) shielding properties of ABS composites reinforced carbon nanofillers were investigated. The dynamic mechanical properties of polymers strongly depend on the adhesion of fillers and polymer, entanglement density of polymer chains in the presence of carbon fillers. The dynamic mechanical characteristics such as storage, loss modulus, and damping factor of prepared composites were significantly affected by the incorporation of MWCNTs, FCNTs, and GCNTs. Maximum EMI shielding effectiveness of ?49.6 dB was achieved for GCNT-ABS composites which were highest compared to MWCNTs-ABS composites (?38.6 dB) and FCNTs-ABS composites (?36.7 dB) in the Ku band (12.4–18 GHz). These results depict the great potential of GCNTs-ABS composites to be used in various applications of efficient heat dissipative EMI shielding materials for electronic devices. |
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| Keywords: | Acrylonitrile butadiene styrene (ABS) Multiwalled carbon nanotubes (MWCNTs) Functionalized carbon nanotubes (FCNTs) Graphene-oxide carbon nanotubes (GCNTs) Electromagnetic interference (EMI) shielding effectiveness Dynamic mechanical analysis (DMA) |
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