Polymerization: PVC (Polyvinyl Chloride)PVC or Polyvinyl Chloride (Poly(Chloroethene)) is a type of plastic used all over the world for a range of things such as pipes, clothing and electrical cables. PVC is considered a thermoplastic resin, meaning it softens when heated. Its molecular formula is (C2H3CL)n and is a white powder resistant to oxidation and degradation. However, it can be harmful to the environment, but since it is economically beneficial for many countries, this is often overlooked. Scientific communication: PVC is manufactured by polymerization of chloroethene (figure 3) CH2 = CHCl. To make PVC, a process called suspension polymerization is used, as shown in Figures 1 and 2. Suspension polymerization of PVC. Vinyl chloride (VCM) is pressurized and liquefied. The liquid is then introduced into a polymerization reactor (40 to 60 °C) containing water and suspending agents and subjected to high speed stirring inside the reactor where small quantities of VCM are obtained. Next, an initiator is introduced into the reactor to become a source of free radicals so that the polymerization reaction can start. The PVC is then suspended in water as a slurry which is then discharged from the polymerization reactor, stripped of residual monomer, dehydrated, dried and the particle size is controlled by screening to give white powdered PVC. The unreacted VCM is then recovered by a stripping process and can be recycled into the reactor. This reaction is exothermic and therefore releases heat and as the temperature inside the reactor must be controlled, this heat must be removed so that a cooling jacket is used to maintain the temperature. The polymerization process produces atactic polymers with chlorines randomly oriented along the chain, as shown in Figure 4. .B...... middle of paper ......e PVC prevents accidents potentially fatal electrical hazards. In hospitals around the world, PVC medical tubes – which do not break or bend – deliver fluids and medications to patients. Automotive components that use heavy-duty PVC can reduce the risk of injury in the event of an accident. Most PVC products last up to 60 years and beyond. These applications are reliable throughout their lifespan and significantly reduce the need for maintenance or repair. Modern cars, for example, last many years longer simply because PVC protects the underside from water and corrosion. Conclusion: In conclusion, although PVC can have harmful effects on the environment and ourselves, if we use PVC carefully and responsibly, I think PVC should be used so that we can feel some of it economic benefits and so that it can be used in our daily lives. However, it must be controlled.