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Study on the Effect of Nano TiO 2 on Mechanical Properties of Chitosan

Owing to the importance of enhanced properties in various spectrums, a good number work has been carried on polymer nanocomposite materials. Augmentation of the properties of materials to fit a them into certain applications has led to the development in composite materials. Polymers due to their vast applicability are structurally exploited to strenghthen their properties which are of the essence. In this work we have impregnated nano powders of Titanium dioxide into the Chitosan polymer matrix in order to pull off a polymer nanocomposite. Attempts have been made to study a few mechanical properties of the nanocomposite like tensile strength, stiffness, modulus of elasticity, percentage elongation at fracture. Nanocomposite films were prepared by solution casting by adding different weights of nano Titanium dioxide to the solution containing 2g of Chitosan. It has been observed that the material propeties of neat Chitosan has undergone remarkable changes after it was doped with nano Titanium dioxide. The Young's Modulus of nano Titanium dioxide doped Chitosan decreased when compared to undoped material for all concentrations of the dopant. Percentage elongation at fracture is found to be having a sudden rise at a particular concentration (0.06gm) of Titanium dioxide in the Chitosan film. The stiffness TiO2 doped Chitosan observes a notable fall in contrast to that of the neat Chitosan film.