Physicochemical Characterization of Sodium Carboxy Methyl Cellulose (CMC): Before and After Exposed to UV Irradiation

The Physical Properties of Sodium Carboxy Methyl Cellulose (CMC) has been studied using refractive index and turbidity measurements. The results indicated that the solution of Sodium CMC markedly effected when exposure to U.V irradiation. These effects clearly appear in the change of physicochemical properties for the samples under investigation. The UV irradiation had a very marked scission in the Sodium CMC chain. This is as a result of weakening in linkage strength between solute-solvent and solute-solute. All values of refractive index decreased after exposed to UV irradiation. This due to natural effect of the molar mass of particles on light speed on the media (solution). This result addressed to the degradation of the Sodium CMC chain after exposed to UV radiation. The values of turbidity for aqueous solution of Sodium CMC after exposed to UV irradiation vary linearly with increasing concentration. It also shows that those values of turbidity for nonirradiated of Sodium CMC are higher than those for UV irradiated of Sodium CMC [CMC irr] samples. This could be attributed to the fact that turbidity is inversely proportional to the mass molar mass and accordingly to the degradation