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write the names and structures of the monomers of...

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

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

(iii) Dacron (iv) Neoprene

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Question: Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) Buna-N (iii) Dacron (iv) Neoprene

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

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

(iii) Dacron (iv) Neoprene