Name: Molecular Masses of Polymers
Uploaded: 2019-07-19
Duration: 4 min 40 s
Description: We already know how to calculate the molecular mass of compounds. In this video, we will discuss the molecular masses of polymers and the methods to determin...

Question

Explain the classification of polymers based on their source and structure.

Accepted Answer

Polymers are classified based on their source or origin. They are:

Natural polymers: The polymers that are found in plants and animals. Examples are proteins, cellulose, starch, some resins and rubber.

Semi-synthetic polymers: Chemically modified natural polymers are called semi-synthetic polymers. Cellulose derivatives as cellulose acetate (rayon) and cellulose nitrate, etc. are the usual examples of this sub category.

Synthetic polymers: They are the man-made polymers. A variety of synthetic polymers as plastic (polythene), synthetic fibres (nylon $- 6, 6$ ) and synthetic rubbers (Buna-S) are examples of manmade polymers extensively used in daily life as well as in industry.

Classification of polymers based on their structures:

Linear polymers: These polymers consist of long and straight chains. The examples of linear polymers are high density polythene, polyvinyl chloride, etc.

Branched chain polymers: They are the polymers containing linear chains along with some branches. Low density polythene is an example.

Cross-linked or Network polymers: They are usually formed from bi-functional and tri-functional monomers and contain strong covalent bonds between various linear polymer chains. Examples are Bakelite, melamine, etc.

Explain the classification of polymers based on their source and structure.

Natural polymers: The polymers that are found in plants and animals. Examples are proteins, cellulose, starch, some resins and rubber.
Semi-synthetic polymers: Chemically modified natural polymers are called semi-synthetic polymers.&nbsp;Cellulose derivatives as cellulose acetate (rayon) and cellulose nitrate, etc. are the usual examples of this sub category.
Synthetic polymers: They are the man-made polymers. A variety of synthetic polymers as plastic (polythene), synthetic fibres (nylon - 6 , 6 ) and synthetic rubbers (Buna-S) are examples of manmade polymers extensively used in daily life as well as in industry.

Important Questions on Polymers

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