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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 646 pages |
| ISBN: | 978-0-9879917-6-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Characterization And Sensor Activity Of PMMA/MWCNT Nanocomposites
Anita Grozdanov1; Aleksandra Buzarovska 2; Ana Tomova 2; Aleksandar Dimitrov 2; Maurizio Avella 3; Maria E. Errico 4;1FACULTY OF TECHNOLOGY AND METALLURGY, Skopje, Macedonia; 2FACULTY OF TECHNOLOGY AND METALLURGY, Skopje , Macedonia; 3INSTITUTE OF CHEMISTRY AND TECHNOLOGY OF POLYMERS, Pozzuoli, Italy; 4INSTITUTE OF CHEMISTRY AND TECHNOLOGY OF POLYMERS, Pozzuoli , Italy;
Type of Paper: Regular
Id Paper: 144
Topic: 9
Abstract:
Carbon nanotube-based polymer composites are fast growing class of materials since carbon nanotubes exhibit a high aspect ration, unique electrical, mechanical and structural properties which contribute to utilize these characteristics for engineering applications such as actuators, hydrogen storage, chemical sensors and nanoelectronic devices. Several papers have been published utilizing CNTs as the sensing material in pressure, flow, thermal, gas, optical, mass, strain, stress, chemical and biological sensors. Amongst many of its superior electro-mechanical properties, piezoresistive effect in CNTs is attractive for sensor design. When CNTs are subjected to a mechanical strain, a change in its chirality leads to modulation of its conductance. In this paper, a novel carbon nanotube/biopolymer nanocomposite was used to develop a piezoresistive strain bio-nano sensor. A biocompatible polymer matrix has been used to provide good interfacial bonding between carbon nanotubes. MWCNT (d=30-50 nm, purity>95%) have been used for preparation of Poly(Methyl Metacrylate) based nanocomposites, PMMA/MWCNT. The PMMA/MWCNT nanocomposites were prepared via the mixing of the MWCNT and PMMA in a dichloromethane solution for 24 h. Characterization of the PMMA/MWCNTs nanocomposite films was performed by DSC, TGA, WAX, FTIR and SEM, as well as mechanical and electrical measurements. Sensor activity was followed through piezoresistive effect important for designing strain sensors. The work describes variations in CNT/polymer piezo-resistive properties when MWCNT doping concentration is varied. The results indicate that introducing MWCNT into PMMA significantly changes have been find in the properties of the obtained nanocomposites.