Abstract

ABSTRACT The naturally occurring polymers chitosan (CH) and sodium carboxymethylcellulose (CMC) have attracted the interest of researchers in a variety of biomedical and pharmaceutical applications such as drug delivery, cosmetics, and tissue engineering. However, CMC and CH have certain limitations for use in controlled aqueous CMC/CH mixed solutions. In this study, aqueous solutions of CMC and CH with the same concentration of 0.5 g/l and pH 6 are mixed under atmospheric conditions. The effects of temperature and molar volume fraction X1 of CMC on the decreased electrical conductivity of CMC/CH mixed solutions were studied at different temperatures ranging from 15°C to 80°C. We highlighted that different regions can be distinguished in the aqueous CMC/CH complexes, depending on the composition and electrostatic interactions of the solutions, which are associated with significantly different phase behaviors.

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