Question

Classification of polymers on the basis of structure

Answer 1

Polymers are high molecular mass substances consisting of large numbers of repeating structural units. On the basis of structure, thepolymers are classified as below:
(i) Linear polymers such as polythene, polyvinyl chloride, etc.
(ii) Branched chain polymers such as low density polythene.

Answer 2

Answer:

Polymers are classified on the basis of structure as follows:  

1. Linear polymers:  

• These polymers are formed of long straight chains.
• For e.g., high density polythene (HDP), polyvinyl chloride, etc.  

2. Branched chain polymers:  

• These polymers are basically linear chain polymers with some branches.
• For e.g., low density polythene (LDP), amylopectin, etc.  

3. Cross-linked or Network polymers:  

• These polymers have many cross-linking bonds that give rise to a network-like structure.
• These polymers contain bi-functional and tri-functional monomers and strong covalent bonds between various linear polymer chains.
• Examples of such polymers include bakelite and melmac.