ADDITION POLYIMIDE - HEAT AND KINETICS OF POLYMERIZATION OF BISMALEIMIDE MODIFIED WITH BISITACONIMIDE

Enthalpy changes and kinetic parameters for the thermal polymerization of N, N'-bismaleimido-p,p'-diphenylmethane, modified by the addition of N,N'-bisitaconimido-p,p'-diphenyl ether, were evaluated from differential scanning calorimetric studies. The Arrhenius parameters, (activation energy E and pre-exponential factor A) were calculated by three kinetic equations for comparison. The heat and kinetics of the polymerization reaction show a systematic decrease with increase in the itaconimide concentration in the polymerizing mixture. A linear correlation between activation parameters and heat of polymerization was also established.