Define thermoplastics and thermosetting plastics and differentiate them

Thermoplastics 

• They are polymers that can be melted and reshaped multiple times without losing their properties.
• Thermoplastics have a linear or branched structure that allows them to move and flow when heated.
• Thermoplastics can be extruded, molded, or formed using heat and pressure.
• Examples of thermoplastics include polyethylene, polypropylene, and polystyrene.
  

Thermosetting

• They plastics are polymers that cannot be melted and reshaped once they have been cured.
• Thermosetting plastics have a cross-linked structure that prevents them from melting or flowing when heated.
• Thermosetting plastics require heat and pressure to cure and become rigid.
• Examples of thermosetting plastics include epoxy, phenolic, and melamine.
• Thermosetting plastics are more rigid and stable than thermoplastics, making them useful in applications where dimensional stability is important.
• Thermoplastics are more flexible and can be used in applications where impact resistance and flexibility are important.