Correlation between mesh size and equilibrium degree of swelling of polymeric networks

Authors

  • Tiziana Canal,

    1. School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907
    Current affiliation:
    1. Istituto di Chimica Farmaceutica e Tossicologica, Universita degli Studi di trieste, 34127 Trieste, Italy
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  • Nikolaos A. Peppas

    Corresponding author
    1. School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907
    • School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907
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Abstract

A correlation is established between the mesh size of a swollen cross-linked network and its equilibrium polymer volume fraction, for hydrogels isothermally swollen up to semidilute, dilute, or concentrated conditions. The exponent of this correlation decreases as the water concentration of the hydrogel decreases. Experimental results with hydrogels of poly(vinyl alcohol) and poly(2-hydroxy ethyl methacrylate) are used to verify the new scaling laws.

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