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How are the polymers classified based on...

How are the polymers classified based on heat treatment? 

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Based on heat treatment polymers are two types. They are thermoplastic polymers and thermosetting polymers.
Thermoplastic polymers are addition linear polymers. These soften and melt on heating. They can be remoulded, recast and reshaped.  
eg: PVC, polystyrene, nylon, etc.  
Thermosetting polymers are condensation cross linked polymers. These become more hard on heating. They cannot be remoulded or reshaped, eg : Bakelite, terylene, urea - forinaldehyde resin, etc.
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AAKASH SERIES-POLYMERS-PROBLEMS
  1. How are the polymers classified based on heat treatment?

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  2. What is crosslinking in polymers ?

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  3. Si(CH(3))(2)Cl(2) is hydrolysed. What type of polymer is formed ?

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  4. A polymer is formed between ethylene dichloride and sodium disulphide....

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  5. Alternating copolymers are commonest copolymers. Comment

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  6. What are plastics and plasticisers ?

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  7. What is the ozonolysis derivative of natural rubber ?

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  8. What are the differences between buna - Sand buna - N rubbers ?

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  9. Write the order of intermolecular forces in neoprene, nylon 6 and PVC.

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  10. Why the natural rubber is elastic ?

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  11. CH(3)CHO+HCNrarrX overset(H(3)O^(+))rarr Which type of polymer is fo...

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  12. Suggest the structure of nylon 2-nylon 6.

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  13. Write the main differences between the structures of starch and cellul...

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  14. How is PTFE familiar commercially?

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  15. A vinyl polymer is a life saving substance as blood plasma. Write the ...

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  16. How are the polymers classified based on heat treatment?

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  17. What is crosslinking in polymers ?

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  18. A polymer is formed between ethylene dichloride and sodium disulphide....

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  19. Si(CH(3))(2)Cl(2) is hydrolysed. What type of polymer is formed ?

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  20. Alternating copolymers are commonest copolymers. Comment

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