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Elastic percolation of swollen polyacrylamide (PAAm)-multiwall carbon nanotubes composite

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Date
2012
Author
Evingür, Gülşen Akin
Pekcan, Önder
Abstract
Polyacrylamide (PAAm)-multiwalled carbon nanotube (MWNT) composites were prepared via free radical cross-linking copolymerization with different amounts of MWNTs varying in the range between 0.1 and 50 wt%. The mechanical properties of swollen PAAm-MWNT composites were characterized by the tensile testing technique. A small content of embedded nanotubes dramatically changes the compressive elastic modulus of the composites. Compressive elastic modulus dramatically increases up to 1wt% MWNT on increasing nanotube content and then decreases presenting a critical MWNT value indicating that there is a sudden change in the material elasticity. The critical exponent y of elasticity below the critical MWNT content 1 wt% is found to be 0.58 which is consistent with the suggestions of percolation in the superelastic percolation network for PAAm-MWNT composite.

Source

Phase Transitions

Issue

6

Volume

85

Pages

553-564

URI

https://hdl.handle.net/20.500.12469/942
https://doi.org/10.1080/01411594.2011.634333

Collections

  • Araştırma Çıktıları / Scopus [1565]
  • Araştırma Çıktıları / WOS [1518]
  • Biyoinformatik ve Genetik / Bioinformatics and Genetics [220]

Keywords

Acrylamide
Multiwalled-carbon nanotubes
Hydrogel
Mechanical properties

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