Identify Teflon: which description correctly names this widely used fluoropolymer?

Chemical Engineering Polymer Technology Difficulty: Easy
Choose an option
  • A
    Phenol–formaldehyde resin
  • B
    An inorganic polymer
  • C
    Polytetrafluoroethylene (PTFE)
  • D
    A monomer

Answer

Correct Answer: Polytetrafluoroethylene (PTFE)

Explanation

Introduction / Context:Teflon is a well-known trade name for a fluorinated polymer famous for its low surface energy, chemical inertness, and high temperature resistance.

Given Data / Assumptions:

  • Teflon corresponds to PTFE.
  • PTFE is an organic polymer consisting of carbon–carbon backbone fully fluorinated.
  • Applications include non-stick coatings, seals, and chemical service linings.

Concept / Approach:PTFE’s repeat unit is –CF2–CF2– obtained by addition polymerisation of tetrafluoroethylene. It is not a phenolic resin, not an inorganic polymer, and certainly not a monomer.

Step-by-Step Solution:Map Teflon → PTFE.Eliminate incorrect classes.Select PTFE.

Verification / Alternative check:Material datasheets and standards list PTFE under fluoropolymers with extremely low friction coefficients.

Why Other Options Are Wrong:Phenolic resin is a different thermoset; “inorganic polymer” does not fit carbon-based PTFE; a monomer is a single small molecule, not Teflon.

Common Pitfalls:Confusing PTFE with PFA or FEP; all are fluoropolymers but have distinct processing windows.

Final Answer:Polytetrafluoroethylene (PTFE)

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