Mass production of carbon nanotube reinforced poly(methyl methacrylate) nonwoven nanofiber mats

Forcespinning® technology was used to study large-scale production of conductive nonwoven nanofiber composite mats. Carboxyl functionalized multi-walled carbon nanotubes (CNT) were used to reinforce poly(methyl methacrylate) (PMMA). Composite nanofibers were developed with average diameters ranging...

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Bibliographic Details
Published in:Carbon (New York) 2014-08, Vol.75, p.217-226
Main Authors: Weng, Baicheng, Xu, Fenghua, Salinas, Alfonso, Lozano, Karen
Format: Article
Language:English
Subjects:
Carbon
Carbon nanotubes
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Mass production
Materials science
Mats
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Nanotubes
Noise levels
Other materials
Physics
Polymethyl methacrylates
Process parameters
Quantum wires
Specific materials
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Summary:Forcespinning® technology was used to study large-scale production of conductive nonwoven nanofiber composite mats. Carboxyl functionalized multi-walled carbon nanotubes (CNT) were used to reinforce poly(methyl methacrylate) (PMMA). Composite nanofibers were developed with average diameters ranging from 370nm to 800nm depending on the selected processing parameters. It was found that the most influential processing parameters were viscosity of the solution and angular velocity used in the system. SEM revealed polymer wetted CNT aligned and oriented along the axis of the nanofibers. The mechanical and electrical properties of the composites were improved, compared to those of the pristine PMMA nanofibers. A 10 orders of magnitude drop in electrical resistivity and an electromagnetic shielding effectiveness of more than 20db were obtained. Raman and Fourier transform infrared spectroscopy analyses indicated changes on the asymmetry of the polar bonds due to interactions between the CNTs and the matrix.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2014.03.056