[en] It is essential to control polymerization parameters in order to reach a specific polymer. A fuzzy controller is proposed to control temperature using reactor and jacket deviations. However, uncertainty exists on a jacket temperature, due to noise disturbance effects. Fuzzy numbers are applied to model this uncertainty. Consequently, a fuzzy trajectory is derived for jacket temperature. Finally, a pseudo-Sugeno fuzzy controller is designed for temperature tracking. The results show the good performance of this controller for control of solution polymerization of methyl methacrylate