Study the effect of increasing Gamma ray doses on some physical properties of Carboxy methyl cellulose

Abdul-Kareem J. Al-Bermany, Rusul Abdul-Amir Ghazi


In this study some of the physical properties of Carboxymethyle cellulose dissolves in distilled water with different concentration had been studies before and after irradiation by gamma ray of variable dose (5000rad, 7000rad, 9000rad).These properties are firstly the Rheological properties such as shear viscosity, relative viscosity specific viscosity and reduced viscosity are measured, secondly the mechanical properties such as ultrasonic velocity had been measured at frequency (40KHz). Other mechanical properties had been calculated such as absorption coefficient of ultrasonic waves, relaxation time, relaxation amplitude, specific acoustic impedance, bulk modules and compressibility. The results show that all these properties are affected with variation in density and viscosity because of the intermolecular interactions Gamma radiation made degradation to polymer molecular chains that affect the physical properties as a result ultrasonic absorption increased and molecular weight decreased after irradiation.

Keywords: CMC solution, ultrasound technique, degradation, rheological properties, mechanical properties.

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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