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Exam 26: Synthetic Polymers

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Question 1

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What type of polymer uses a diisocyanate as one of its monomer components?

A) polyurethanes
B) polyamides
C) polyesters
D) polycarbonates
E) none of the above

F) B) and D)
G) A) and E)

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Question 2

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Provide the structures of the monomers from which Dacron is formed.

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Question 3

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Provide the structure of syndiotactic polystyrene.

Provide the structures of the monomers needed to synthesize the polymer below.

Natural rubber is a:

Which type of polymer is not typically formed via step-growth polymerization?

A polymer with a high degree of crystallinity is usually ________ than a similar polymer with a lower degree of crystallinity.

Show the reaction which occurs when benzoyl peroxide is heated.

Provide the structure of the monomer from which poly(vinyl chloride) is formed.

Provide the structure of syndiotactic polypropylene.

Why is chain branching less common in anionic polymerization than in cationic polymerization?

Provide the structure of the monomer from which poly(acrylonitrile) is formed.

A substance that is added to a polymer to lower its Tg is called a ________.

Classify neoprene, shown below, as either being an addition polymer or condensation polymer. Justify your answer.

Provide the structures of the monomers from which nylon 6,6 is formed.

Provide the structure of isotactic polypropylene.

How does vulcanization of rubber alter its structure and properties?

Provide a mechanism to show how H₂C=C(CH₃)₂ is polymerized using BF₃ as the initiator.

Draw the structure of the polymer produced in the following reaction.

Provide the structure of isotactic polystyrene.