Flower

The word plastic is derived from the Greek (plastikos) meaning capable of being shaped or molded. Plastic that is made up of polymers having only aliphatic (linear) C atoms in their backbone chains. e.g.: poly propylene. Plastics that are made up of heterochain polymers contain O, N, S in their backbone chains, in addition to C. e.g.: poly carbonate. Plastic behaviour of polymers is influenced by their morphology (arrangement of molecules).they are either amorphous or crystalline. Most thermosets are amorphous, while thermoplastics may be amorphous or semi crystalline. Plastics are a range of synthetic or semi-synthetic polymerization products that can be molded into a permanent object having the property of plasticity. Plastics are found extensive industrial applications. Plastics having a variety of properties are available at present. They have low specific gravities, ease of fabrication, resistance to low thermal and electrical conductivities. Many plastics can take range of c...