Volume 136, Issue 11 47205
Article

Improved rheological properties and stability of multiwalled carbon nanotubes/polymer in harsh environment

Ehsan Nourafkan

Corresponding Author

Ehsan Nourafkan

School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT United Kingdom

Correspondence to: E. Nourafkan ([email protected])Search for more papers by this author
Maje Alhaji Haruna

Maje Alhaji Haruna

School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT United Kingdom

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Jabbar Gardy

Jabbar Gardy

School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT United Kingdom

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Dongsheng Wen

Dongsheng Wen

School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT United Kingdom

School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191 China

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First published: 22 October 2018
Citations: 22

ABSTRACT

This work aims to improve the rheological properties and stability of multiwalled carbon nanotubes (MWCNTs)/acrylamide (AA) base skeleton polymer blends at harsh environment of high salinity-high temperature (HS-HT) or various pH. Different co/terpolymers have been accomplished to modify the structure of AA polymer by free-radical copolymerization of AA-based monomers. Anionic, cationic, and hydrophobic functional groups were used for the synthesis of polyelectrolyte, polyampholytic, and partially hydrophobic AA polymer types. The conversion, molecular weight, and poly dispersity of co/terpolymers have been evaluated by nuclear magnetic resonance (1H-NMR), gel permeation chromatography, and differential scanning calorimetry analysis. The effects of sonication power, concentration of polymer, and concentration of MWCNTs were also investigated on rheological behavior of co/terpolymers. The results show that negative polyelectrolyte and polyampholytic polymers are the best candidates for the improvement of MWCNTs/polymer stability and viscosity at HS-HT and alkali environment, respectively. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47205.

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