Plastic! An organic polymer of high molecular weight with certain additives. It has registered its importance in a wide range of applications in this modern world.  Engineering Plastic :- Engineering plastics are thermoplastics with superior mechanical and/or thermal properties. This specific group of plastics have replaced traditional engineering materials like wood, ferrous metal etc. These are mainly famous for their stability, low cost (as compared to traditional engineering material), repeatability (giving same result in case of mass production) and chemical resistance to ambient condition. Plastics can be classified as, Thermoplastics and Thermosetting plastics   Amorphous and Semi - Crystalline plastics There are so many options in Engineering Plastics, how can we make a correct selection?   Understanding the Morphological Characteristics of plastics             It basically refers to the arrangement of the constituents after solidification. Thi