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

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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.

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Acknowledgments

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

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Authors and Affiliations

  1. Piri Reis University, 34940, Tuzla, Istanbul, Turkey

    G. Akin Evingür

  2. Kadir Has University, 34083, Cibali, Istanbul, Turkey

    Ö. Pekcan

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  1. G. Akin Evingür
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  2. Ö. Pekcan
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Correspondence to Ö. Pekcan.

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Evingür, G.A., Pekcan, Ö. Superelastic percolation network of polyacrylamide (PAAm)–kappa carrageenan (κC) composite. Cellulose 20, 1145–1151 (2013). https://doi.org/10.1007/s10570-013-9903-9

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  • DOI: https://doi.org/10.1007/s10570-013-9903-9

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