Abstract

The purpose of this study is to discuss the role of kappa-carrageenan (κ-car) in the drying and swelling of polyacrylamide (PAAm)–κ-car composite. The fluorescence intensity of pyranine increased and decreased as drying and swelling time were increased respectively for all samples. The desorption coefficient, Dd, decreased as κ-car contents were increased for a given temperature during drying. However, cooperative diffusion coefficient, Ds, increased as κ-car contents were increased during swelling at a given temperature.

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