What are polymer and classification of polymer
Answers
Polymer, any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, that are multiples of simpler chemical units called monomers.
Classification of Polymers. The most common way of classifying polymers is to separate them into three groups - thermoplastics, thermosets, and elastomers. The thermoplastics can be divided into two types - those that are crystalline and those that are amorphous
Answer: A Polymer is a very large molecule having high molecular mass formed by the joining of repeated simple reactive structural units (monomers).
Classification based on structure
1. Linear : contain long straight chains Ex: PVC, HDPE
2.Branched chain : linear chains having some branches Ex: LDPE
3.Cross linked polymers or Network polymer : usually formed from bifunctional and trifunctional monomers and contain strong covalent bonds between various linear polymer chains Ex: Bakelite, Melamine.