Tuesday, 14 July 2015

Polymer And Polymerization

Polymer And Polymerization

Condensation Polymer: Nylon-6-6, Terylene.
Addition Polymer: Polythene, Neoprene.

Polymer Classification

Polymer Classification on the basis of Source:

1.    Natural Polymer: Protein, Cellulose, Rubber.
2.    Semi-synthetic Polymer: Cellulose Derivatives as cellulose acetate (Rayon), Cellulose Nitrate.
3.    Synthetic Polymer: Plastic (Polyethene), Synthetic Fibers ( Nylon 6-6), Buna-S.

Polymer Classification on the basis of Structure:

1.    Linear Polymer: High Density Polythene, Polyvinyl Chloride.
2.    Branched Chain Polymer: Low Density Polythene.
3.     Cross Linked or Network Polymer: Bakelite, Melamine.

Polymer Classification on the basis of Molecular Forces:

1.    Elastomers: Weak intermolecular forces. eg.- Natural Rubber, Synthetic Rubber.
2.    Fibers: Strong intermolecular forces. eg.- Polyamides (Nylon6-6), Polyesters (Terylene).
3.    Thermoplastic: Polythene, Polystyrene.
4.    Thermosetting: Bakelite, Urea Formaldehyde Resins.

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