Differentiate between the molecular structures and behaviour of thermoplastic and thermosetting polymers. Give one example of each type

Explanation

### Step-by-Step Text Solution:

**1. Definition of Thermoplastic and Thermosetting Polymers:**
- **Thermoplastic Polymers:** These are polymers that can be repeatedly softened upon heating and hardened upon cooling. They have a linear or slightly branched structure.
- **Thermosetting Polymers:** These polymers undergo a curing process that creates a three-dimensional network of cross-linked structures. Once set, they cannot be remolded or softened by heating.

**2. Molecular Structure:**
- **Thermoplastic Polymers:** They consist of long, linear, or slightly branched chains. The chains are held together by moderate intermolecular forces (like van der Waals forces).
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