Question

Which one of the following polymers is prepared by addition polymerization

• A. Dacron
• B. Teflon
• C. Nylon-66
• D. Novolac

Answer 1

The Correct Option is B

To determine which polymer is prepared by addition polymerization, let's understand the types of polymerization processes:

1. Addition Polymerization: This process involves the repeated addition of monomer molecules possessing double or triple bonds, resulting in polymers without any by-products.
2. Condensation Polymerization: It involves the reaction between monomers with two functional groups, leading to the formation of polymers and the simultaneous elimination of small molecules like water or HCl.

Now, let's analyze each option:

• Dacron: This is a polyester and is formed through condensation polymerization involving ethylene glycol and terephthalic acid, with the elimination of water molecules.
• Teflon: It is produced by the addition polymerization of tetrafluoroethylene (C₂F₄) monomers. This process does not involve any by-products, fitting the description of addition polymerization.
• Nylon-66: This polymer is formed by condensation polymerization of hexamethylene diamine and adipic acid, with the elimination of water as a by-product.
• Novolac: This is a type of phenol-formaldehyde resin synthesized through condensation polymerization, and it involves the elimination of water.

Based on the analysis above, Teflon is the polymer prepared through addition polymerization, as it involves the polymerization of tetrafluoroethylene without the formation of any by-products.