Problem 43 - A Complete Resource Book in Chemistry for JEE Main

Question

Teflon is a polymer of (a) tetrafluorethylene (b) tetraiodoethylene (c) tetrabromoethylene (d) tetrachloroethylene

Step-by-Step Solution

Answer

Teflon is a polymer of (a) tetrafluoroethylene.

Step 1: Understanding the Question

We need to determine which compound is the monomer used to produce the polymer known as Teflon.

Step 2: Recognizing Teflon's Characteristics

Teflon is a well-known non-stick coating and is characterized by its chemical resistance and low friction. It is a type of plastic known scientifically as polytetrafluoroethylene (PTFE).

Step 3: Identifying the Monomer

The name polytetrafluoroethylene (PTFE) indicates that the monomer contains fluorine. Tetrafluoroethylene is the monomer used for polymerization to produce PTFE.

Step 4: Matching the Monomer to Options

From the options given: (a) Tetrafluoroethylene - Contains fluorine (b) Tetraiodoethylene - Contains iodine, not fluorine (c) Tetrabromoethylene - Contains bromine, not fluorine (d) Tetrachloroethylene - Contains chlorine, not fluorine The correct option must be (a) tetrafluoroethylene since it matches with the PTFE polymer, which Teflon consists of.

Key Concepts

Teflon

Teflon is a widely appreciated material known for its exceptional non-stick properties. You might recognize it from cookware surfaces or as a coating that significantly reduces friction. Teflon is more than just a brand name; it refers to a polymer scientifically recognized as polytetrafluoroethylene (PTFE).

It achieves its famous characteristics of chemical and thermal resistance due to its unique molecular structure. Teflon doesn't react easily with substances, making it an ideal choice for surfaces that need to stay clean and efficient. This resilience also means it can withstand a wide range of temperatures without degrading, adding to its versatility in various applications.

• Highly resistant to corrosion
• Operates effectively across various temperatures
• Non-reactive and safe for numerous uses

It's clear why Teflon has become a staple in both industrial and household applications, making our lives more convenient through its reliability and efficiency.

monomers

Monomers are small molecular units that serve as the building blocks for polymers. Imagine them as individual beads that, when linked together, form a long chain or bracelet—this is essentially what happens in the formation of polymers.

Each monomer has a simple structure that allows it to join with similar molecules through a process called polymerization. During polymerization, the monomers bond together, creating a chain that defines the properties of the resulting polymer. The variety and order of monomers used can drastically alter the characteristics of a polymer, which is why every polymer has unique properties that suit various applications.

• Monomers are like single beads connecting to form a chain.
• They join through a chemical process called polymerization.
• The type of monomers determines the polymer's properties.

Understanding monomers is essential in materials science because they dictate how we can customize and apply different polymers in technology and everyday products.

polytetrafluoroethylene (PTFE)

Polytetrafluoroethylene, commonly referred to as PTFE, is a potent and durable polymer thanks to its unique molecular composition. It is made by polymerizing tetrafluoroethylene monomers, which contain carbon and fluorine atoms.

The incredible properties of PTFE stem from these chemical bonds. PTFE is virtually unaffected by solvents and chemicals, which is why it finds numerous uses in environments where other materials might fail. From kitchen equipment to industrial applications, PTFE's non-reactive nature makes it ideal for many functions.

• Made from the monomer tetrafluoroethylene.
• Features exceptional resistance to chemicals.
• Utilized in cookware, lubricants, and many more products.

With PTFE's multitude of applications and remarkable durability, it continues to be an essential material across numerous fields, providing solutions where other materials can’t.