Question:

Which one of the following is a chain growth polymer?

Updated On: Jul 12, 2022
  • Starch
  • Nucleic acid
  • Polystyrene
  • Protein
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The Correct Option is C

Solution and Explanation

Chain growth polymerisation requires an initiator (such as organic peroxides) to produce a free radical to which the monomers are added in a chain fashion. Initiators are added in a very small quantities and are decomposed by heat, light or oxidation-reduction reaction to produce reactive species, eg, free radical. Polystyrene is an example of chain growth polymer because in it styrene molecules are associated in the form of monomer.
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Concepts Used:

Biodegradable Polymers

Microorganisms destroy biodegradable polymers in an appropriate amount of time, ensuring that biodegradable polymers and their degraded products have a low environmental result. Enzyme-catalyzed processes shatter these polymers down into little segments, and microorganisms manufacture these enzymes.

Biodegradable Polymers: Examples

  1. Poly-β-hydroxybutyrate-co-β-hydroxy valerate (PHBV)
  2. Polylactic Acid (PLA)
  3. Poly (ε-caprolactone) (PCL)
  4. Nylon-2-Nylon-6

Biodegradable Polymers: Properties

  1. Can maintain strong mechanical unification until they are degraded.
  2. Degradation, in general, starts at the end groups because biodegradable polymers have exceptionally strong carbon backbones that are difficult to crack.
  3. Non-toxic in nature.
  4. Degradation rates can be controlled.
  5. Lack of crystallinity, which inhibits access to end groups.
  6. Hydrophilic polymers.

Read More: Biopolymers