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Karnataka Board PUCPUC Science 2nd PUC Class 12

Classification of Polymers> Based on Intermolecular Forces

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Estimated time: 2 minutes
Maharashtra State Board: Class 12

Key Points: Classification of Polymers> Based on Intermolecular Forces

  • Polymers can be classified based on intermolecular forces into elastomers, fibres, thermoplastics, and thermosetting polymers.
  • Elastomers have the weakest intermolecular forces, making them flexible and elastic; e.g., natural rubber, Buna-S.
  • Fibres have strong intermolecular forces (like hydrogen bonding), giving them high tensile strength; e.g., Nylon-6, Terylene, PAN.
  • Thermoplastics have weak van der Waals forces, so they can be softened and reshaped on heating; e.g., polythene, polystyrene.
  • Thermosetting polymers have strong cross-linked structures, making them hard and rigid; e.g., Bakelite, melamine.
    Strength order: Elastomers < Thermoplastics < Fibres < Thermosetting polymers.

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