Abstract:

The kinetics of vinyl chloride suspension polymerization with a novel peroxide, 3hydroxy1,1dimethylbutyl peroxyneodecanoate (Lup 610) as a single initiator at 51.3℃ and 56.8℃ and tbutyl peroxyneoheptanoate (Lup 701) or thexyl peroxyivalate (HPV) as a single initiator at 61.8℃, was studied The initiation efficiency at each temperature was obtained by selecting the kinetic model value that best fitted the experimental valueThe initiation efficiency of initiator Lup 610 was 0.80 at 51.3℃ and 0.75 at 56.8℃, that of initiator Lup 701 and HPV was 0.55 and 0.50 at 61.8℃, respectivelyThen the kinetics of polymerization with these novel peroxides mixed with di-2-ethylhexyl peroxydicarbonate or t-butyl peroxyneodecanoate as initiators was also investigatedIt was found that the experimental data were in good agreement with the model value.