Rheological properties of the polymeric blends

Tatyana Matseevich,Andrey Askadskii,V Andreev

doi:10.1051/matecconf/20168604061

Abstract

The calculation scheme for storage modulus and loss modulus for compatible polymers as a function of the temperature, stress state, and composition has been suggested. The relations for calculation of the storage modulus at high frequency for polymer of any chemical structure containing carbon, hydrogen, and oxygen atoms are suggested. Calculation scheme allows evaluation both of the storage modulus and loss modulus for compatible blends of polymers. The calculations are performed for mixtures of polystyrene, poly(methyl methacrylate), polycarbonate, and polyethylene oxide used for the manufacture of building materials.

Highlights

; fi is the selection of constants which characterize the influence of strong intermolecular interaction; Si is the Vander-Waals surface of the i-th atom, through which the intermolecular interaction occurs; κi is the elasticity coefficient of the i-th atom bond; li is the characteristic size of the bond;
¦ 'Vi is the Van-der-Waals volume of i-th atom entering into repeating unit of polymer. i
The dependence of storage modulus of the blend under consideration on the molar part of polycarbonate is shown on Figure 1

Summary

Si kili

; the values of gi characterize an average contribution of each atom into the value of. ¦ 'Vi is the Van-der-Waals volume of i-th atom entering into repeating unit of polymer. I. For compatible blend of polymers the equation (1) is transformed to the form:. The equation (4) allows description of the shear modulus G depending on molar concentration of Polymer 2. Atom or type of intermolecular interaction Carbon Hydrogen Oxygen Double bond Dipole-dipole interaction*. Using these parameters as well as the Van-der-Waals volumes of the atoms [2,3,4,5] we obtain for polystyrene. The dependence of storage modulus of the blend under consideration on the molar part of polycarbonate is shown on Figure 1

Molar part of Polycarbonate DPC

The storage modulus and loss modulus of the polymer blends

Gcc Z

Conclusions