PAAm-Kappa Carrageenan Composites: Drying and Swelling with Various Kappa Carrageenan Contents

Abstract

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