5. What is PET? Give its two uses.
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Answers
It is typically called "polyester" when used for fibers or fabrics, and "PET" or "PET Resin" when used for bottles, jars, containers and packaging applications. PET is the world's packaging choice for many foods and beverages because it is hygienic, strong, lightweight, shatterproof, and retains freshness.....
It is typically called "polyester"
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Polymers are macromolecules which are formed by certain repeating units. These repeating units are called monomers. Monomers have some functional groups which react with each other to form a long polymeric chain. The chemical bonds between monomer units are usually covalent bonds which are formed due to addition between some unsaturated monomer units or condensation between two different functional groups such as -COOH, -NH2, -OH etc
USES
It has higher strength and stiffness than PBT
It is very strong and lightweight & hence easy and efficient to transport