Question:
Which of the polymer is not prepared by condensation polymerization?
Which of the polymer is not prepared by condensation polymerization?
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Look at the monomer. If it contains a \(C=C\) double bond (like vinyl monomers, ethylene, styrene, or methyl methacrylate), it usually undergoes addition polymerization. If it has two different functional groups (\(-OH\), \(-COOH\), \(-NH_2\)), it's likely condensation.
Updated On: May 20, 2026
- Dacron
- PET
- PMMA
- Nylon 6,6
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The Correct Option is C
Solution and Explanation
Concept:
Polymers are classified by their polymerization mechanism:
• Condensation (Step-growth): Monomers react to form a polymer with the elimination of a small molecule like water or methanol.
• Addition (Chain-growth): Monomers (usually containing double bonds) add to one another without the loss of any atoms.
Step 1: Analyze the listed polymers.
• Dacron/PET: Polyester formed by the condensation of ethylene glycol and terephthalic acid (eliminates \(H_2O\)).
• Nylon 6,6: Polyamide formed by the condensation of adipic acid and hexamethylene diamine (eliminates \(H_2O\)).
• PMMA (Poly methyl methacrylate): Formed by the addition polymerization of the methyl methacrylate monomer through its vinyl (\(C=C\)) double bond.
Step 2: Conclusion.
Since PMMA is formed via free-radical addition polymerization of an unsaturated monomer, it is not a condensation polymer.
• Condensation (Step-growth): Monomers react to form a polymer with the elimination of a small molecule like water or methanol.
• Addition (Chain-growth): Monomers (usually containing double bonds) add to one another without the loss of any atoms.
Step 1: Analyze the listed polymers.
• Dacron/PET: Polyester formed by the condensation of ethylene glycol and terephthalic acid (eliminates \(H_2O\)).
• Nylon 6,6: Polyamide formed by the condensation of adipic acid and hexamethylene diamine (eliminates \(H_2O\)).
• PMMA (Poly methyl methacrylate): Formed by the addition polymerization of the methyl methacrylate monomer through its vinyl (\(C=C\)) double bond.
Step 2: Conclusion.
Since PMMA is formed via free-radical addition polymerization of an unsaturated monomer, it is not a condensation polymer.
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