Technology of Producing the Nanocomposite Polymeric Films

Determination of the Coefficients of Elasticity and Viscosity of NanocomposHe Polymeric Films 

For measuring the mechanical characteristics of the aforementioned films such as coefficients of elasticity and viscosity, one can use the piezoelectric resonators of bulk acoustic waves [23]. It should be noted that this method may be used when the 

As it was discussed earlier, we investigated the nanocomposite films based on a low-density polyethylene with Fe and Fe203 nanopartides of the various concentrations. 

Here = (Cjj°is the specific acoustic impedance c( ° is the coefficient of elasticit) is the density J ° = (ol ° is the wave number is the wave velocity and L ° is the thickness. Indices f and o correspond to the film and oil, respectively. The velocity of the acoustic wave and specific acoustic impedance may be written similarly to Eq. (7.4) as 

The first row of these tables demonstrated the parameters for the modified pure low-density polyethylene. The accuracy of the determinations of the material constants is about 10%. 

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