Question

The starting material of PCTFE is:
A)- mono chlorotrifluoroethylene
B)- tetrafluoroethylene
C)- vinyl chloride
D)- styrene

Answer 1

Hint :Polychlorotrifluoroethylene may be a thermoplastic chlorofluoro polymer with the formula $ {(C{F_2}CClF)_n} $ , where n is the number of monomer units within the polymer molecule. PCTFE and PTFE have unique advantages and drawbacks compared with each other.

Complete Step By Step Answer:
The starting material of PCTFE is mono chlorotrifluoroethylene. PCTFE is an additional homopolymer. It's prepared by the free-radical polymerization of chlorotrifluoroethylene (CTFE) and might be applied by solution, bulk, suspension and emulsion polymerization.
PCTFE could be a homopolymer of chlorotrifluoroethylene (CTFE), whereas PTFE could be a homopolymer of tetrafluoroethylene. The monomers of the previous differs from that of latter structurally by having a chlorine atom replacing one in every of the fluorine atoms. Hence, each repeating unit of PCTFE has a chlorine atom in situ of a fluorine atom.
This is responsible for PCTFE to possess less flexibility of chain and hence higher glass transition temperature. PTFE includes a higher freezing point and is more crystalline than PCTFE, but the latter is stronger and stiffer.
Though PCTFE has excellent chemical resistance, it's still but that of PTFE. PCTFE has lower viscosity, higher enduringness and creep resistance than PTFE.
Hence the correct option is A.

Note :
Due to its chemical stability, it acts as a protective barrier against chemicals. it's used as a coating and prefabricated liner for chemical applications. PCTFE is additionally used for laminating other polymers like PVC, polypropylene, PETG, APET etc. it's also utilized in transparent eyeglasses, tubes, valves, chemical tank liners, O-rings, seals and gaskets.