Short Answer Type

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How Dacron is obtained from ethylene glycol and tetrephthalic acid?


Dacron is prepared by the condensation of terephthalic acid ethylene glycol in the presence of catalyst zinc acetate and antimony trioxide.


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What do you mean by PDI? What does it tell us about a polymer?
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Identify the monomer in the following polymer structures:

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How does the presence of double bonds in rubber molecules influence their structure and reactivity?

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What is biodegradable polymer and give an example of a biodegradable aliphatic polyester?

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Identify the monomer in the following polymer structures:

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What is the difference between polyacrylates and polyesters?

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Write the names and structures of the monomers of the following polymers:
(1) Buna-S   (2) Buna-N    (3) Dacron         (4)Neoprene.

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Write the monomers used for getting the following polymers.
(i) Polyvinyl chloride    (ii) Teflon    (iii) Bakelite.

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Give two differences between an addition polymer and a condensation polymer.

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