ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Role of polypropylene polyhydroperoxide in the emulsion polymerization of styrene and methyl methacrylate
D. Mikulášová, V. Chrástová, P. Citovický, and T. Fačková
Department of Chemical Technology of Plastics and Fibres,
Slovak Technical University, 880 37 Bratislava
Abstract: The rate of the polymerization of styrene and methyl methacrylate initiated
by powdered oxidized polypropylene depends on the concentration of polyhydroperoxide. The exponent 0.5 of this relationship was found for the polymerization of styrene on condition that the content of the solid phase in the system
was constant and for the polymerization of methyl methacrylate in the
stationary region of conversion curves. If the change in the concentration of
polyhydroperoxide was achieved by changing the content of the solid phase in
the system, the unit reaction order was found for the polymerization of styrene.
This reaction order is equal to the sum of the experimentally determined
exponents for the concentrations of triethylenetetramine and polyhydroperoxide.
The stationary course of the polymerization of styrene and the autocatalytic
course of the polymerization of methyl methacrylate are attributed to the
specific character of the decomposition of polypropylene polyhydroperoxide
during polymerization which is one of the causes of long-living radical existence
in this type of polymerization.
Full paper in Portable Document Format: 322a186.pdf
Chemical Papers 32 (2) 186–193 (1978)
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