Itmight be surprising that the PICs, solid materials consisting of mul-tivalent electrostatic interactions, can be molded into thin filmsusing hot pressing at the low temperature of 120◦C. Effects ofchemical structure and molecular weight of polysaccharides onformability and physical properties of the resulting films warrantssystematic investigation. Research along this line has been con-ducted in our group. We believe that the PIC characteristics werethe key factor