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Sensors 2009, 9(1), 86-101; doi:10.3390/s90100086
Article

Preparation of Surface Adsorbed and Impregnated Multi-walled Carbon Nanotube/Nylon-6 Nanofiber Composites and Investigation of their Gas Sensing Ability

1
, 2
 and 1,2,3,*
Received: 19 November 2008; in revised form: 12 December 2008 / Accepted: 22 December 2008 / Published: 6 January 2009
(This article belongs to the Special Issue Gas Sensors 2009)
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Abstract: We have prepared electrospun Nylon-6 nanofibers via electrospinning, and adsorbed multi-walled carbon nanotubes (MWCNTs) onto the surface of Nylon-6 fibers using Triton® X-100 to form a MWCNTs/Nylon-6 nanofiber composite. The dispersed MWCNTs have been found to be stable in hexafluoroisopropanol for several months without precipitation. A MWCNTs/Nylon-6 nanofiber composite based chemical sensor has demonstrated its responsiveness towards a wide range of solvent vapours at room temperature and only mg quantities of MWCNTs were expended. The large surface area and porous nature of the electrospun Nylon-6/MWCNT nanofibers facilitates greater analyte permeability. The experimental analysis has indicated that the dipole moment, functional group and vapour pressure of the analytes determine the magnitude of the responsiveness.
Keywords: Porosity; electrospinning; nanofibers; dispersion; one dimensional material; surface functionalization Porosity; electrospinning; nanofibers; dispersion; one dimensional material; surface functionalization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lala, N.L.; Thavasi, V.; Ramakrishna, S. Preparation of Surface Adsorbed and Impregnated Multi-walled Carbon Nanotube/Nylon-6 Nanofiber Composites and Investigation of their Gas Sensing Ability. Sensors 2009, 9, 86-101.

AMA Style

Lala NL, Thavasi V, Ramakrishna S. Preparation of Surface Adsorbed and Impregnated Multi-walled Carbon Nanotube/Nylon-6 Nanofiber Composites and Investigation of their Gas Sensing Ability. Sensors. 2009; 9(1):86-101.

Chicago/Turabian Style

Lala, Neeta L.; Thavasi, Velmurugan; Ramakrishna, Seeram. 2009. "Preparation of Surface Adsorbed and Impregnated Multi-walled Carbon Nanotube/Nylon-6 Nanofiber Composites and Investigation of their Gas Sensing Ability." Sensors 9, no. 1: 86-101.


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