Temperature Dependence of Properties in Gels of Kappa-Carrageenan,Agarose and Their Blends

Gels of agarose, kappa-carrageenan and their blends were studied on the temperature dependence of their physical properties by optical and mechanical methods etc. The changes of optical rotation and Young's modulus were investigated. The phenomena showed that agarose and kappa-carrageenan are miscible both in high temperature solution and in room temperature, forming two freely interpenetrating networks Witlrout strong interaction, so that, the optical rotation and Young's modulus of the blends of two gels were shown to be additive well. Moreover, the elastic force of two pure substances and their blend was analyzed thermodynamically, with two effects of Young's modulus on temperature.