Question:
Which from following polymers is NOT obtained by addition polymerisation method?
Which from following polymers is NOT obtained by addition polymerisation method?
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PHBV is a condensation copolymer of hydroxy acids.
Updated On: Oct 1, 2026
- Teflon
- Polyacrolonitrile
- LDP
- PHBV
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Addition polymers form by joining unsaturated monomers through chain reaction without losing any small molecule. Condensation polymers form by joining monomers with the loss of small molecules such as water.
Step 2: Key Formula or Approach:
Teflon is from tetrafluoroethene, polyacrylonitrile from acrylonitrile and LDP (low density polythene) from ethene, all alkenes. PHBV comes from 3-hydroxybutanoic acid and 3-hydroxypentanoic acid.
Step 3: Detailed Explanation:
The first three are made from \(\text{C=C}\) monomers by addition.
PHBV (poly-\(\beta\)-hydroxybutyrate-co-\(\beta\)-hydroxyvalerate) is a polyester made by condensation of the two hydroxy acids, so it is not an addition polymer.
Final Answer:
PHBV is not an addition polymer, option (D). \[ \boxed{\text{PHBV}} \]
Addition polymers form by joining unsaturated monomers through chain reaction without losing any small molecule. Condensation polymers form by joining monomers with the loss of small molecules such as water.
Step 2: Key Formula or Approach:
Teflon is from tetrafluoroethene, polyacrylonitrile from acrylonitrile and LDP (low density polythene) from ethene, all alkenes. PHBV comes from 3-hydroxybutanoic acid and 3-hydroxypentanoic acid.
Step 3: Detailed Explanation:
The first three are made from \(\text{C=C}\) monomers by addition.
PHBV (poly-\(\beta\)-hydroxybutyrate-co-\(\beta\)-hydroxyvalerate) is a polyester made by condensation of the two hydroxy acids, so it is not an addition polymer.
Final Answer:
PHBV is not an addition polymer, option (D). \[ \boxed{\text{PHBV}} \]
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