Q.

Natural rubber is all cis polymer of isoprene, what is the name of all trans polymer of same monomer?

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a

Neoprene

b

Buna-N

c

Buna -S

d

Gutta-percha

answer is A.

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Detailed Solution

Natural rubber is made up entirely of the trans isoprene polymer, whereas Buna-N is made up entirely of the trans isoprene polymer.

The most popular and cost-effective elastomer used in the seal business is nitrile (also known as NBR rubber and Buna-N). It has exceptional resistance to petroleum-based lubricants, fuels, water, alcohols, silicone greases, and hydraulic fluids.

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