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Exam 26: Synthetic Polymers

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Question 61

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Provide a representation of isotactic poly(acrylonitrile).

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Question 62

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The stereochemistry observed in this polymer is described as ________.

A) atactic
B) isotactic
C) syndiotactic
D) tacky
E) regiotactic

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

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Question 63

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Is the polymer shown below an addition polymer or a condensation polymer?

At low temperatures, long-chain polymers are usually:

Named for a pair of Nobel Prize winners, ________ catalysts, which are composed of aluminum- and titanium-containing Lewis acids, provide a high measure of stereocontrol in alkene polymerizations.

What type of polymer uses phosgene as one of its monomer components?

What type of polymer is formed by the transesterification of dimethyl terephthalate with 1,4-di(hydroxymethyl) cyclohexane?

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

Predict the monomer units that combine to form polyurethane.

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

_{Which of the following is the best initiator for a cationic polymerization?}

The Tg of a polymer is its:

Which of the following is not an addition polymer?

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

________ polymers result from rapid reaction of one molecule at a time with a growing polymer chain, usually with a reactive intermediate at the growing end of the chain.

Most pop bottles are made from this type of polymer: ________.

Provide the structure of atactic polypropylene.

From which of the following are water pipes commonly manufactured?

________ are added to polymers to make them more flexible.

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