Vs. Savostyanov et al., A CALORIMETRIC STUDY OF SPONTANEOUS POLYMERIZATION IN ACRYLAMIDE SYSTEMS CONTAINING METAL NITRATES, Russian chemical bulletin, 42(6), 1993, pp. 1023-1026
A calorimetric study of the kinetics of spontaneous polymerization of
acrylamide in systems containing Cr(III) and Er(III) nitrates has been
carried out. At 20-25-degrees-C, the process is characterized by a co
nsiderable induction period (20-40 min), a fast increase of the polyme
rization rate, up to its maximum value (5-10 min), and its subsequent
slow decrease to insignificant values. It has been established that th
e composition of the reaction mixture significantly affects the record
ed polymerization rates, and practically does not change the time para
meters and the integral degrees of conversion of the process, which ar
e 20 and 80 % for the nitrates of Cr(III) and Er(III), respectively. T
he effect of the addition of water or inhibitors of radical reactions
on the process has been studied.