write a notes on plastic
Answers
Answer:
Plastics are organic materials, just like wood or wool. Plastics make it possible to balance today's needs with environmental concerns. Plastics is the term commonly used to describe a wide range of synthetic or semi-synthetic materials that are used in a huge and growing range of applications.
Answer:
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Explanation:
A plastic is a material that can change its shape. Many things are made of plastics, usually because making them to the right shape is easy. ... Most of the materials that are called plastic are polymers. Polymers are long chains of atoms bonded to each other.
1) Polyethylene Terephthalate (PETE) Can it be recycled? ...
2) High-Density Polyethylene (HDPE) Can it be recycled? ...
3) Polyvinyl Chloride (PVC - U) Can it be recycled? ...
5) Polypropylene (PP) Can it be recycled? ...
6) Polystyrene or Styrofoam (PS) Can it be recycled? ...
Plastics is versatile, hygenic, lightweight, flexible and highly durable. It accounts for the largest usage of plastics world wide and is used in numerous packaging applications including containers, bottles, drums, trays, boxes, cups and vending packaging, baby products and protection packaging.
As of 2017, over 100 million tonnes of polyethylene resins are being produced annually, accounting for 34% of the total plastics market. Many kinds of polyethylene are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene, with various values of n.