The effect of polymer—filler interaction energy on the T′g of filled polymers

doi:10.1016/0021-9797(73)90406-2

Journal of Colloid and Interface Science

Volume 43, Issue 3, June 1973, Pages 583-590

https://doi.org/10.1016/0021-9797(73)90406-2 Get rights and content

Abstract

The glass transition temperatures of composites of four polymers containing moderate to high concentrations of silicas of different surface properties were measured by means of the torsional pendulum. The shift in T_g of the composites to higher temperatures as compared to that for the unfilled polymer was correlated in terms of the polymer—filler interaction energies which were measured by the heats of adsorption of the model compounds of the polymers on the filler surfaces. The shift in T_g is directly related to the extent of polymer—filler interaction energy. It is small in the absence of a strong polar interaction but increases for the strongly adsorbing polymers. At an average polymer film thickness of 20–31 Å, loss peaks due to the adsorbed as well as unadsorbed polymer were obtained. Thus the effect of polymer-filler interaction energy on the short range molecular motion in composites is restricted to short distances (less than 20 Å), comparable with the range of the surface force field.

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The effect of polymer—filler interaction energy on the T′g of filled polymers

Abstract

Rubber Chem. Technol.

Ind. Eng. Chem.

Macromolecules

Macromolecules

J. Phys. Chem.

Polym. Letters B

Trans. Soc. Rheol.

Rubber Chem. Technol.

J. Appl. Polym. Sci.

Rubber Chem. Technol.

J. Appl. Polym. Sci.

The effect of polymer—filler interaction energy on the T′_g of filled polymers