Poly(vinyl chloride) (PVC) is one of the oldest polymers and the second largest in volume thermoplastic manufactured in the world and produced from free radical polymerization of vinyl chloride monomer with suspension method in batch reactor. different methods for modeling of batch polymerization is exist. Provided model for reactor temperature control is based on mass and energy conservative laws. kinetic correction of this model verify with experimental data that exist in some different papers and for verification of thermal equation of model, it' used from experimental data of Bandar Imam industrial reactor. Reactor dynamic behavior is suitable when attention to model simplification. In other section of this research, it is used from Sequential Linearization method for reactor temperature control on optimal temperature profile. Whit this method , transfer functions of process are calculate in each step time on temperature profile. based on calculated transfer functions, there are estimated controller parameters with minimization of Integral of Time weighted Absolute Error (ITAE). Results of applying designed control system, show that the control of reactor temperature on selected temperature profile is suitable. Increase of integral constant of controller, show that response speed of system and it's vibration is increase and offset of system is decreases.