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

Write the names and structures of the mo | Class 12 Chemistry Chapter Polymers, Polymers NCERT Solutions

Question:

Write the names and structures of the monomers of the following polymers:

(i) Buna-S (ii) Buna-N

(iii) Dacron (iv) Neoprene

Answer:

Polymer		Monomer	Structure of monomer
i	Buna-S	1, 3-butadiene	CH₂ = CH – CH = CH₂
i	Buna-S	Styrene	C₆H₅CH = CH₂
ii	Buna-N	1, 3-butadiene	CH₂ = CH – CH = CH₂
ii	Buna-N	Acrylonitrile	CH₂ = CH – CN
iii	Neoprene	Chloroprene
iv	Dacron	Ethylene glycol	HOH₂C –CH₂OH
iv	Dacron	Terephthalic acid

1) Buna-S (styrene butadiene rubber) - It is obtained by the polymerization of Buta-1, 3 -diene and styrene in the ratio of 3:1 in the presence of sodium. It is used for making automobile tyres and footwear.

2) Buna-N (Nitrile rubber)- It is obtained by polymerization of 1,3-butadiene and acrylonitrile in the presence of a peroxide catalyst. It is used for making oil seals, manufacture of hoses and tank linings.

3) Dacron – It is obtained by the polymerization of ethylene glycol and terphthalic acid.

4) Neoprene –It is prepared by the free radical polymerization of chloroprene. It is used as insulator, for making belts, gaskets, hoses etc.

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Comments

Ankita
2020-09-30 21:06:28

thanks its very helpfull for me thankyou very much

Aradhana kushwaha
2020-01-17 13:40:31

Ek question search kr rhi thi bhaut Sare question ke answer ka pta chlaa Thanks for

Anku Mehra
2019-12-28 08:38:10

Excellent

firdous
2019-07-08 19:26:49

What are the monomer repeating units of nylon-6 and nylon-6,6

FAYAZ AHMED KHAN
2019-06-16 20:12:30

AZAAB

Abhishek Bhardwaj
2019-02-12 05:31:50

Niceð

Abhishek Bhardwaj
2019-02-12 05:31:22

Nice hai Good jobð ð ð

Akansha arya
2019-01-21 14:55:34

proved beneficial to me.. thnx 4 giving glimpse of monomers of polymers....

Ganesh patel
2018-12-06 17:47:37

Osm and helpful for students

Naseeb
2018-09-05 18:53:54

Good job..

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Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 17: Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) B....

Write the names and structures of the mo | Class 12 Chemistry Chapter Polymers, Polymers NCERT Solutions

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