Abstract
AbstractThe kinetics of free radical polymerization in bulk of alkylphenyl methacrylates with ethyl‐,isopropyl and tert‐butyl groups in the ortho‐ and para‐positions of the phenyl ring with dilauroyl peroxide as initiator were investigated. For comparison and completion of the investigation, ortho‐ and para‐tolyl methacrylates were reinvestigated with this particular initiator. Most of the results obtained do not obey classical kinetics of polymerization. The results were treated according to the concept of degradative chain transfer and it was concluded that this mechanism is responsible for the non‐ideality. The ortho‐substitution with increasing size of the substituents decreases the overall rate of polymerization and strengthens chain transfer to monomer.
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