Kinetic study of seeded emulsion polymerization of vinyl acetate

A series of seeded emulsion polymerization of vinyl acetate have been carried out using a dilatometer with a infrared monitor and a computer recording system in the initiator concentration range from 5.030 x 10(-5) mol/L to 1.002 x 10(-3) mol/L. Due to the polymerization started from the interval II , the effect of the particle growth on the rate parameters has been avoided. Based on the experiment data of conversion vs time, we got the polymerization rate in quasi-steady state, and then calculated the entry rate coefficient rho, exit rate coefficient k and kp(n) over bar. The results showed that the polymerization rate, rho, k and kp(n) over bar increased linearly with increasing initiator concentration. Also, kp(n) over bar is linear to the polymerization rate