Abstract
A water dispersible graphene polymer nanocomposite was synthesized by solution blending method and deposited on a nylon-6 membrane via vacuum assisted self - Assembly (VASA) method to fabricate a flexible material applied as a chemoresistive gas sensor for trimethylamine (TMA). The morphological and structural characterization of graphene/polystyrene-sulfonate nanocomposite were carried out by using Fourier-Transform infrared (FT-IR) spectroscopy, Raman spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy and field-effect scanning electron (FE-SEM) microscope. While, electrical conductivity was measured using a four-point probe measurement. The prepared polymer nanocomposite has a percolation threshold around 0.30% vol. fraction, with a conductivity of 2.45 S/m (rsd = 3.0%, n=3). The response of the composite sensor exhibited linear range from 23 to 183 mg/L (r2=0.95713) and the sensitivity was at 1.72 × 10-3 ΔR/R mg L-1. The gas sensor exhibited repeatable response to TMA gas and the calculated limit of detection was at 22.67 mg/L.
Lingua originale | English |
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Titolo della pubblicazione ospite | Proceedings of the 2015 18th AISEM Annual Conference, AISEM 2015 |
Pagine | 1-4 |
Numero di pagine | 4 |
DOI | |
Stato di pubblicazione | Pubblicato - 2015 |
Evento | 18th Conference on Sensors and Microsystems, AISEM 2015 - Fondazione Bruno Kessler, Trento, Italy Durata: 3 feb 2015 → 5 feb 2015 |
Convegno
Convegno | 18th Conference on Sensors and Microsystems, AISEM 2015 |
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Città | Fondazione Bruno Kessler, Trento, Italy |
Periodo | 3/2/15 → 5/2/15 |
Keywords
- Computer Science Applications1707 Computer Vision and Pattern Recognition
- Electrical and Electronic Engineering
- graphene
- polymer nanocomposites
- trimethylamine & chemiresistor