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How do double bonds in rubber molecules ...

How do double bonds in rubber molecules influence their structure and reactivity ?

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Natural rubber is all-cis polyisoprene which is obtained
The cis-bond in isoprene do not allow the polymer chains to come closer for effective interaction and hence intermolecular forces are very weak.As a result,natural rubber acquires randomly coiled structure and shows elasticity.
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CENGAGE CHEMISTRY ENGLISH-SYNTHETIC AND NATURAL POLYMERS-Exercises Concept Application
  1. Explain the terms polymer and monomer

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  2. What are natural and synthetic polymers? Give two examples of each typ...

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  3. Distinguish between the terms homopolymer and copolymer and give an ex...

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  4. How do you explain the functionality of a monomer?

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  5. Define the term polymerisation.

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  6. Is (NH-CHR-CO)(n), a homopolymer or copolymer?

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  7. In which classes, the polymers classified on the basis of molecular fo...

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  8. How can you differentiate between addition and condensation polymerisa...

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  9. Explain the term copolymerisation and give two examples.

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  10. Write the mechanism of free radical polymerization of ethene.

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  11. Define thermoplastic and ther-mosetting polymers. Give one example of ...

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  12. Write the monomers used for getting the following polymers. (i) Poly...

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  13. Write the name and structure of one of the common initiators used in f...

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  14. How do double bonds in rubber molecules influence their structure and ...

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  15. Discuss the main purpose of vulcanisation of rubber

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  16. What are the monomeric repeating units of Nylon-6 and Nylon-6,6?

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  17. Write the names and structures of the monomers of the following polyme...

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  18. Identify the monomer in the following polymeric structures.

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  19. How is dacron obtained from ethylene glycol and terephthalic acid ?

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  20. What are biodegradable and non-biodegradable detergents ? Give one exa...

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