ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Dispersion polymerization of methyl-methacrylate in heptane
O. Šušoliak and J. Bartoň
Polymer Institute, Centre for Chemical Research,
Slovak Academy of Sciences, CS-842 36 Bratislava
Abstract: The particle size of poly(methyl methacrylate) dispersion is a function of
relative molecular mass and concentration of the three-block isoprene—styre
ne—isoprene copolymer operating as a dispersant of the polymer dispersion.
The influence of temperature of polymerization on the particle size of
poly(methyl methacrylate) dispersion in the interval 50—90 °C is negligible. In
contrast to the results hitherto published, the study of the influence of
dispersant on the rate of dispersion polymerization has shown that this rate is
influenced by concentration and molecular mass of the polymer dispersant. The
polymer dispersant has no capability to influence directly the rate of polymeri
zation. It only regulates the size of arising particles and thus the change in
polymerization rate due to dispersant is to be regarded as a result of the
influence of the change in size of polymer particles. The rate of dispersion
polymerization increases with concentration of the polymer dispersant, i.e.
with diminution of particles. A similar but more conspicuous dependence
appears if polymer dispersants with different molecular mass are used.
Full paper in Portable Document Format: 393a379.pdf
Chemical Papers 39 (3) 379–390 (1985)