Polymer and Plastic
Polymeric materials consist of molecules of higher molecular weight, varying from 10 3 to 10 7 . All polymer have recurring structural molecular units that comprises large molecules. Four major industries 1. Plastic 2. Fibre 3. Rubber and 4. Paint and Varnish. Naturally occurring polymers are a) Cellulose b) Lignin C) Proteins and d) Resins and rubbers. On account of their inherent advantage in properties and versatility in adaptation and use, Plastic have come to play vital role in variety of application in world over Plastics are used in making essential consumers goods of daily use for common man such as Basket, water bottle, tiffin box, toothbrushes. They also find application in field like agriculture, automobile, transportation, engineering, electronics, defense, medicine and building construction. Plastic is growing impo...