Kinetics of Rubber-modified Nylon 6

Kinetic parameters are calculated based on the reactive temperature rise curve measured by adiabatic approach at the temperature of 145 to 160 degrees C with the catalytic system of NaOH and acyl caprolactam End-capped butadiene-acrylonitrile rubber (CHTBN) or styrene-butadiene rubber (CHTBS). The reaction order is first order, the activation energy is between 72.91-73.16 kJ.mol(-1) and the pre-exponential factor is between 3.22 x10(11)- 3.38x10(11) mol(1-n).s(-1) in the system of CHTBN/NaOH. While in CHTBS/NaOH, the reaction order is between 1.23-1.34, the activation energy is between 85.55-86.88 kJ.mol(-1) and the pre-exponential factor is between 4.52 x10(11)-5.0 9x10(11) mol(1-n).s(-1). The adiabatic reaction kinetic model of caprolactam anion was constructed based on the existing research findings, by which the polymerizing reaction is simulated. The coincidence between the simulation results and the experimental data revealed that the model is reasonable and correct.