ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Influence of metal stearates on thermal-stability of poly(vinyl chloride). 2. Magnesium stearate

P. Šimon, J. Oremusová, L. Valko, and P. Kovařík

Department of Physical Chemistry, Faculty of Chemical Technology, Slovak Technical University, CS-81237 Bratislava

Abstract: Influence of magnesium stearate on the kinetics of thermal dehydrochlorination of poly(vinyl chloride) is studied. The samples thermally stressed are analyzed by infrared spectroscopy and by viscosimetric determination of their relative molecular mass. A reaction scheme of the processes proceeding in the course of dehydrochlorination is suggested and the rate constants of individual kinetic steps are determined by comparing the experimental and theoretical kinetic curves. On the basis of the results obtained the mechanism of the stabilizing effect of magnesium stearate is discussed.

Full paper in Portable Document Format: 451a127.pdf

Chemical Papers 45 (1) 127–134 (1991)