The optimal conditions for the synthesis of polyvinyl chloride PVC from vinyl chloride monomer VCM can vary depending on the specific process and desired properties of the final product. However, general guidelines for the polymerization process are as follows:1. Temperature: The polymerization of VCM to PVC is typically carried out at temperatures between 40C and 60C. Lower temperatures can slow down the reaction rate, while higher temperatures can lead to undesirable side reactions and degradation of the polymer.2. Pressure: The pressure for the polymerization process is usually maintained in the range of 5 to 20 atmospheres. Higher pressures can help increase the reaction rate and the molecular weight of the PVC, but they can also lead to increased energy consumption and safety concerns.3. Initiator: The amount of initiator needed for the polymerization process depends on the specific initiator used and the desired properties of the PVC. Common initiators for PVC synthesis include organic peroxides, such as benzoyl peroxide, and azo compounds, such as azobisisobutyronitrile AIBN . The initiator concentration is typically in the range of 0.1 to 1.0 weight percent of the VCM, with higher concentrations leading to faster reaction rates and lower molecular weight PVC.It is important to note that these conditions can be adjusted depending on the specific requirements of the PVC product being synthesized, and the optimal conditions may vary depending on factors such as the reactor design, the presence of additives, and the desired molecular weight and properties of the PVC.