Question
Differentiate between chain growth and step growth polymerization. Give the structural formula one polymer of each type.
Solution
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Chain growth polymerization |
Step-growth Polymerization |
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1.Concentration of monomers decreases steadily throughout the reaction. |
1.Monomers disappear early in the reaction |
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2.Only one repeating unit is added at a time. |
Any two species present can react. |
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3.Increase in reaction time increase the yield but molecular mass is affected very little. |
3. Long reaction time is essential to get high molecular mass polymer. example: |
