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What is the difference between Buna-N an...

What is the difference between Buna-N and Buna-S.

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Monomers of Buna-N : Buta -1, 3-diene, Acrylonitrile.
Monomers of Buna-S are : Buta -1, 3 -diene, styrene and sodium
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What is the similarity between buna-N and PHBV ?

What is the common monomer for buna-S and buna-N rubber ?

Buna - S is a

Rubber is a naturally occurring polymer, which is a linear polymer of isoprene. It can be easily deformed but regains its original shape after the stress is relieved. The properties of natural rubber can be modified and improved by process of vulcanization. It is mixed with 3 to 5% sulphur and heated at 373-423 K. This forms cross links through disulphide bonds (-S-S-) , which make rubber hard, tough with greater tensile strength. There are many different formulations of synthetic rubbers. These are copolymers in which one of the monomer is isoprene. Some common examples are neoprene rubber, Buna-S, Buna-N, etc. What does the letter 'N' stands for in synthetic rubber Buna-N.

DINESH PUBLICATION-POLYMERS-Question from Board examinations
  1. Which out of Buna-S, protenis and PVC, is a natural polymer ?

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  2. Name the monomers of Nylon -66

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  3. Given the preparation and used of Nylon -66

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  4. Write the name and structures of the monomers in the polymer BHBV

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  5. Describe the classification of polymer based on their structure.

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  6. Write the name and structures of the monomers of the following polymer...

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  7. What is Teflon ? Give its formula

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  8. What are co-polymers ? Give chemical equation for the preparation of g...

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  9. Define the terms : (i) Elastomers (ii) Flibres (iii) Thermoplastics

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  10. (i) What is the role of benzoyl peroxide in the polymerisation of ethe...

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  11. How is vulcanisation of rubber performed ?

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  12. Write down full names of (i) PTFE (ii), PVC.

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  13. Giving examples, how can you distinguish between homopolymers and co-p...

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  14. Define thermoplastics and thermosetting polymers with two examples of ...

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  15. Name the type of reaction involved in the formation of the following p...

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  16. How is Buna-S prepared ?

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  17. Write the name of the biodegradable polymer used in orthopaedic device...

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  18. How is polythene prepared from ethene ? Give chemical equation only

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  19. What is the difference between Buna-N and Buna-S.

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  20. THERMOPLASTIC & THERMOSETTING POLYMER

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