Highly enhanced electrical and mechanical properties of methyl methacrylate modified natural rubber filled with multiwalled carbon nanotubes |
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| Institution: | 1. Division of Physical Sciences, Faculty of Science, Prince of Songkla University, Hat-Yai, Thailand;2. Department of Chemistry, Faculty of Science, King Mongkut''s University of Technology, Thonburi, Thailand;3. Faculty of Engineering and Computer Science, University of Applied Sciences Osnabrück, Osnabrück, Germany;4. Department of Physics, Rajarajeswari College of Engineering, Bangalore, India;1. Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, Surat Thani, 84000, Thailand;2. Faculty of Engineering and Computer Science, University of Applied Sciences Osnabrück, Osnabrück, 49076, Germany;1. Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;2. Green Materials for Industrial Application Research Unit, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;3. Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand |
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| Abstract: | Developing conductive networks in a polymer matrix with a low percolation threshold and excellent mechanical properties is desired for soft electronics applications. In this work, natural rubber (NR) functionalized with poly(methyl methacrylate) (PMMA) was prepared for strong interfacial interactions with multiwalled carbon nanotubes (MWCNT), resulting in excellent performance of the natural rubber nanocomposites. The MWCNT and methyl methacrylate functional groups gave good filler dispersion, conductivity and tensile properties. The filler network in the matrix was studied with microscopy and from its non-linear viscoelasticity. The Maier-Göritze approach revealed that MWCNT network formation was favored in the NR functionalized with PMMA, with reduced electrical and mechanical percolation thresholds. The obvious improvement in physical performance of MWCNT/methyl methacrylate functionalized natural rubber nanocomposites was caused by interfacial interactions and reduced filler agglomeration in the NR matrix. The modification of NR with poly(methyl methacrylate) and MWCNT filler was demonstrated as an effective pathway to enhance the mechanical and electrical properties of natural rubber nanocomposites. |
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| Keywords: | Nano composites Carbon nanotubes Mechanical properties Dynamic mechanical thermal analysis (DMTA) Electrical properties |
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