Synergistic effect in conductive networks constructed with carbon nanofillers in different dimensions
| Autor: | Hua Deng, Emiliano Bilotti, Xiang Gao, L Lin, Aajm Ton Peijs, Q Zhang, SM Zhang, Qiang Fu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Polymers and Plastics carbon black General Chemical Engineering chemistry.chemical_element Carbon nanotube lcsh:Chemical technology law.invention Nanocomposites electrical percolation synergistic effect law Materials Chemistry lcsh:TA401-492 lcsh:TP1-1185 Physical and Theoretical Chemistry Composite material Electrical conductor carbon nanotubes Organic Chemistry Percolation threshold Carbon black Network formation chemistry Percolation Excluded volume lcsh:Materials of engineering and construction. Mechanics of materials Carbon |
| Zdroj: | Express Polymer Letters, 6(2), 159-168. BME-PT and GTE eXPRESS Polymer Letters, Vol 6, Iss 2, Pp 159-168 (2012) |
| ISSN: | 1788-618X |
| Popis: | Herein, investigation on synergistic effect during network formation for conductive network constructed with carbon nanofillers in different dimensions is conducted. Multi-walled carbon nanotubes (MWNTs) and carbon black (CB) are employed as conductive fillers in this system. Morphological control of the conductive network is realized by adjusting the ratio between different fillers. Classical percolation threshold theory and adjusted excluded volume theory are used to analyze the electrical percolating behavior of these systems. It is observed that the percolation threshold of hybrid fillers filled conductive polymer composites (CPCs) is much lower than that of MWNTs or CB filled CPCs, and it can be reduced from 2.4 to 0.21 wt% by replacing half of the MWNTs with CB. Possible mechanism of this phenomenon is discussed together with morphological observation. A model is proposed to understand the mechanism of the percolation behavior in the composites containing various proportions of nanofillers. Our work is important for the design and preparation of low cost conductive polymer composites with novel electrical property. |
| Databáze: | OpenAIRE |
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