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Cellulose

, Volume 20, Issue 3, pp 1145–1151 | Cite as

Superelastic percolation network of polyacrylamide (PAAm)–kappa carrageenan (κC) composite

  • G. Akin Evingür
  • Ö. Pekcan
Original Paper

Abstract

The elasticity of the polyacrylamide (PAAm)-kappa carrageenan (κC) composite was determined as a function of (w/v-%) κC content at 40 °C. The gel composites studied contained various percentages (w/v-%) of κC. The elasticity of the swollen PAAm-κC composite was characterized by using the tensile testing technique. This study investigated the elasticity and the percolation threshold of PAAm-κC composite as a function of κC content. It is understood that the compressive elastic modulus decreases up to 1 (w/v-%) of κC and then increases at contents above 1(w/v-%) of κC. The critical exponent of elasticity y was determined between 1 and 1.6 (w/v-%) of κC and found to be 0.68. The observed elastic percolation threshold is consistent with the suggested values of the superelastic percolation network.

Keywords

Universality Elasticity Acrylamide Kappa carrageenan (κC) Superelastic percolation network 

Notes

Acknowledgments

We thank Dr. Argun Talat Gökçeören for the mechanical measurements.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Piri Reis UniversityTuzla, IstanbulTurkey
  2. 2.Kadir Has UniversityCibali, IstanbulTurkey

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