Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 91, Issue -, Pages 133-139Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.10.002
Keywords
Carbon nanotubes and nanofibers; Polymer-matrix composites (PMCs); Electrical properties
Funding
- Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2016M3A7B4900044]
- Fundamental R&D Program for Core Technology of Materials (Chalcogenide nanostructure-based room-temperature (25 degreesC) H2 & H2S gas sensors with low power consumption) - Ministry of Trade, Industry & Energy, Republic of Korea [10050890]
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Multi-wall carbon nanotubes (MWCNTs) were incorporated into a poly-methylmethacrylate (PMMA) matrix by using MWCNT coated PMMA particles. The MWCNTs were well incorporated to PMMA particles by a simple solution mixing and drying method with dimethylformamide (DMF) and Me0H as mixing mediums; no additional processing was necessary to achieve this level of dispersibility. The PMMA/ MWCNTs prepared from MWCNT-incorporated PMMA particles showed a high electrical conductivity of 1.23 S/cm at an MWCNT loading of 3 wt%. The critical exponent fitting by scaling law demonstrated that the electrical conduction is generated through 3-dimensionally in polymer matrices. The percolation threshold of the PMMA/MWCNT composite, which has a segregated structure in DMF, was noticeably lower than that of the PMMA/MWCNT resin, which had a randomly distributed structure. The lowest values of the percolation threshold were achieved at 0.0095 wt% of MWCNT loading. (C) 2016 Elsevier Ltd. All rights reserved.
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