Effect of multiwalled carbon nanotube (MWNT) on the behavior of swelling of polyacrylamide–MWNT composites

The purpose of this paper is to discuss the role of multiwalled carbon nanotube in the swelling of polyacrylamide–multiwalled carbon nanotube composites. Swelling experiments were performed in water at various temperatures by real-time monitoring of the decrease in pyranine (Py) and emission light i...

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Bibliographic Details
Published in:Journal of reinforced plastics and composites 2014-07, Vol.33 (13), p.1199-1206
Main Authors: Evinguer, Guelsen Akin, Pekcan, Oender
Format: Article
Language:English
Subjects:
Carbon nanotubes
Diffusion coefficient
Emission
Mathematical analysis
Monitoring
Multi wall carbon nanotubes
Polymer matrix composites
Swelling
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Summary:The purpose of this paper is to discuss the role of multiwalled carbon nanotube in the swelling of polyacrylamide–multiwalled carbon nanotube composites. Swelling experiments were performed in water at various temperatures by real-time monitoring of the decrease in pyranine (Py) and emission light intensity (Iem). The Stern–Volmer equation is modified for low-quenching efficiencies to interpret the behavior of pyranine intensity during the swelling of polyacrylamide–multiwalled carbon nanotube composites. The Li–Tanaka equation was used to determine the swelling time constants, τ, and cooperative diffusion coefficients, D, from fluorescence intensity, weight, and volume variations of the composite at various temperatures. It was observed that when τ decreased, naturally D increased by increasing temperatures.
ISSN:0731-6844
1530-7964
DOI:10.1177/0731684414526438