
Explain the method of preparation of PVC (polyvinyl chloride).
Answer
511.8k+ views
Hint: Polyvinyl chloride (PVC) is a polymer of vinyl chloride. PVC is prepared by addition of vinyl chloride in a chain form with the repeated pattern. Vinyl chloride also known as chloroethylene can be obtained by reacting ethylene with hydrochloric acid and oxygen over the surface of copper catalyst.
Complete step by step answer:
For the preparation of polyvinyl chloride, the monomer used is vinyl chloride $\left( {C{H_2} = CHCl} \right)$.
Polyvinyl chloride is prepared by addition polymerisation in which monomers are added in a chain. Vinyl chloride is treated with peracid under pressure and we get polyvinyl chloride (PVC).
$n\left[ {C{H_2} = CHCl} \right]\xrightarrow[{Pressure}]{{Peracid}}{\left[ { - C{H_2} - CHCl - } \right]_n}$
Additional Information: There are two forms of PVC: flexible PVC and rigid PVC, mainly rigid PVC is used. It is used for sewerage pipes and other pipe applications where cost or vulnerability to corrosion limit the use of metal and age of PVC products longer than many metals. Rigid PVC is used in production of pipes, doors, windows and containers. It can be made softer and flexible by adding plasticizers in it. In this form, it is used in insulating electric wires, flooring, phonograph records and at many places PVC replace rubber.
So, option (D) is the correct answer.
Note:PVC is a polymer with good insulator it can be used at some place for providing insulation from electric current. PVC is less stable at high temperature it starts decomposing when its temperature reaches at $140^oC$ or above.
Complete step by step answer:
For the preparation of polyvinyl chloride, the monomer used is vinyl chloride $\left( {C{H_2} = CHCl} \right)$.
Polyvinyl chloride is prepared by addition polymerisation in which monomers are added in a chain. Vinyl chloride is treated with peracid under pressure and we get polyvinyl chloride (PVC).
$n\left[ {C{H_2} = CHCl} \right]\xrightarrow[{Pressure}]{{Peracid}}{\left[ { - C{H_2} - CHCl - } \right]_n}$
Additional Information: There are two forms of PVC: flexible PVC and rigid PVC, mainly rigid PVC is used. It is used for sewerage pipes and other pipe applications where cost or vulnerability to corrosion limit the use of metal and age of PVC products longer than many metals. Rigid PVC is used in production of pipes, doors, windows and containers. It can be made softer and flexible by adding plasticizers in it. In this form, it is used in insulating electric wires, flooring, phonograph records and at many places PVC replace rubber.
So, option (D) is the correct answer.
Note:PVC is a polymer with good insulator it can be used at some place for providing insulation from electric current. PVC is less stable at high temperature it starts decomposing when its temperature reaches at $140^oC$ or above.
Recently Updated Pages
Master Class 12 Biology: Engaging Questions & Answers for Success

Class 12 Question and Answer - Your Ultimate Solutions Guide

Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Social Science: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
Father of Indian ecology is a Prof R Misra b GS Puri class 12 biology CBSE

Enzymes with heme as prosthetic group are a Catalase class 12 biology CBSE

Which are the Top 10 Largest Countries of the World?

An example of ex situ conservation is a Sacred grove class 12 biology CBSE

Why is insulin not administered orally to a diabetic class 12 biology CBSE

An orchid growing as an epiphyte on a mango tree is class 12 biology CBSE
