Widely dispersed PEI-based nanocomposites with multi-wall carbon nanotubes by blending with a masterbatch |
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| Affiliation: | 1. Department of Physics, Osmania University, Hyderabad 500 007, India;2. Consortium for Scientific Research, Khandwa road, Indore 452 017, India;1. Amity Institute of Applied sciences, Amity University Noida, India;2. Lovely Professional University, School of Electrical and Electronics Engoneering, Jalandhar, India;1. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China;2. University of Chinese Academy of Science, Beijing 100049, China;1. College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China;2. Department of Bioscience and Textile Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan;3. Department of Mechanical Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4, Ebinokuchi, Tsuchiya Aza, Yurihonjo, Akita 015-0055, Japan;1. College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, People’s Republic of China;2. Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, 1304 W Pennsylvania Ave, Urbana IL 61801, USA |
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| Abstract: | High performance poly(etherimide) (PEI)-based nanocomposites (PNs) with multi-walled carbon nanotubes (MWCNT) were obtained via melt mixing. To achieve this, PEI was mixed with a well-dispersed commercial poly(butylene terephthalate) (PBT)/MWCNT master-batch in an attempt to transfer the dispersed MWCNTs to a PEI matrix. A broad and homogeneous dispersion of MWCNTs throughout the PEI-based matrix was obtained. The electrical percolation threshold (pc) was reached at only 1 wt.% MWCNT. This pc showed a power law dependence of conductivity on filler concentration, with a critical exponent of 1.92, which indicates that a three dimensional percolated structure was achieved. The glass transition temperature and the pressure at the output end of the extruder decreased when the master-batch was added, indicating that the processability of PEI was improved. In addition to this, the modified PEI-based PNs presented ductile behaviour and an ameliorated (12% with 5 wt.% MWCNT) elastic modulus compared with pure PEI. |
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| Keywords: | A Nano-structures A Polymer–matrix composites (PMCs) B Electrical properties B Mechanical properties |
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