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St. B. Iliev, G. S. Georgiev
Magnetostimulated acceleration of the radical donor-acceptor
copolymerization
Abstract
It was established that the radical donor-acceptor copolymerization of
maleic anhydride with vinyl 2,2,4-trimethylheptanoate, vinyl acetate and styrene
is accelerated under a magnetic field. Molecular weights of the copolymers
produced are higher than those of the copolymers obtained without a magnetic
field. These magnetic effects depend on the both the induction and the
pulsatile component amplitude of the magnetic field. They are explained on the
basis of the Hall's scheme for the radical pair formation at the interaction of
the electronoacceptor monomer with electronodonor one. It is suggested that the
radical pairs take part in both the initiation and the propagation reactions of
the copolymerization discussed, and that the spin polarization at the pulsatile
field increases their contribution in these reactions too.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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