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Syamasri Gupta ¹, S. P. Moulik ¹

Affiliations
1 Department of Physical Chemistry, Jadavpur University, Calcutta-32, IN

Abstract

Conformation changes of the biopolymer amylose in different environments have been evaluated through hydrodynamic parameters. In presence of additives, conformational change is not the sole factor for complexation with iodine : specific solvent effects are present. Aqueous KI solution fails to extract iodine from the complex by dialysis but benzene can extract a part of it. Surfactants, above their critical micelle concentrations, can significantly destabilise the complex. These results and the effect of temperature on the complex reveal that major part of the iodine is strongly bound and the rest is weakly bonnd to amylose.

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Syamasri Gupta ¹

Affiliations
1 Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700 032, IN

Abstract

Microemulsions are thermodynamically stable dispersions of water-in-oil or oil-in water formed by the addition of either surfactants or mixtures of surfactant-cosurfactant. These systems are microscopically heterogeneous but macroscopically homogeneous The dispersed oil or water droplets can act as microreactors having properties different from bulk properties, so a chemical reaction undertaken in the microaqueous pool of the microemulsion is under a different environment from "bulk" condition.

Keywords

Enzyme Kinetics, W/O Microemulsion, Surfactant, Oil, Rate Constant, Thermodynamics.

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