Question 1

When a plasticizer is added to a polymer, the overall effect is to ________ the crystallinity of the polymer and ________ its Tg.

Accepted Answer

A)   reduce; lower
B)   increase; lower
C)   increase; raise
D)   reduce; raise
E)   eliminate; raiseF) A) and B)
G) C) and E) A

Question 2

Explain why H2C  
CHCO2CH3 does not undergo cationic polymerization.

Accepted Answer

No reasonably stable...

Question 3

Provide the structure of atactic polystyrene.

Accepted Answer

The answer of Provide the structure of atactic polystyrene....

Question 4

Provide a mechanism to show how H2C  
CHCO2CH3 is polymerized using butyllithium as the initiator.

Accepted Answer

Question 5

Another name for a urethane is a(n)  ________.

Accepted Answer

A)   carbamate ester
B)   carbonate ester
C)   orthoester
D)   aryl diisocyanate
E)   carbamic acidF) B) and E)
G) B) and C)

Question 6

The mechanism by which poly(methyl α-cyanoacrylate)  formed was most likely ________.

Accepted Answer

A)   anionic addition
B)   cationic addition
C)   radical addition
D)   condensationE) A) and D)
F) All of the above

Question 7

What type of polymer is Lexan?

Accepted Answer

A)   polyester
B)   polyamide
C)   polyurethane
D)   polycarbonateE) B) and C)
F) A) and D)

Question 8

Provide the structure of syndiotactic polypropylene.

Accepted Answer

The answer of Provide the structure of syndiotactic polypropylene....

Question 9

Which of the following polymers can be classified as copolymers?

Accepted Answer

A)   1 & 2
B)   2 & 4
C)   1 & 4
D)   2 & 3
E)   1, 3, & 4F) All of the above
G) A) and B)

Question 10

What type of polymer is formed from ethylene glycol and a diester as monomer components?

Accepted Answer

A)   polyurethanes
B)   polyamides
C)   polyesters
D)   polycarbonates
E)   none of the aboveF) A) and E)
G) A) and C)

Question 11

Which of the following is not an addition polymer?

Accepted Answer

A)   polyethylene
B)   Orlon
C)   Plexiglas
D)   Kevlar
E)   TeflonF) A) and D)
G) A) and E)

Question 12

"Super" glues are typically composed of what polymer?

Accepted Answer

A)   poly(acrylonitrile) 
B)   poly(methyl α-cyanoacrylate) 
C)   polystyrene
D)   polypropylene
E)   poly(methyl α-methylacrylate) F) C) and D)
G) D) and E)

Question 13

Orlon is another name for what polymer?

Accepted Answer

A)   poly(acrylonitrile) 
B)   poly(methyl α-cyanoacrylate) 
C)   polystyrene
D)   polypropylene
E)   poly(methyl α-methylacrylate) F) B) and C)
G) None of the above

Question 14

Provide the structure of isotactic polypropylene.

Accepted Answer

The answer of Provide the structure of isotactic polypropylene....

Question 15

Provide the structure of ε-caprolactam, the monomer from which Nylon 6 is formed.

Accepted Answer

The answer of Provide the structure of ε-caprolactam, the monomer...

Question 16

The Tg of a polymer is its ________.

Accepted Answer

A)   gum transition temperature
B)   growth temperature
C)   Gaussian thermocouple
D)   lattice relaxation time
E)   glass transition temperatureF) A) and B)
G) C) and E)

Question 17

Provide the structure of isotactic polystyrene.

Accepted Answer

The answer of Provide the structure of isotactic polystyrene....

Question 18

Which of the following represents a carbonate ester?

Accepted Answer

A)   RCO2R'
B)   ROCO2R'
C)   RCOR'
D)   (RO) 3CR'
E)    RNHCO2R'F) D) and E)
G) C) and D)

Question 19

Provide the structure of syndiotactic polystyrene.

Accepted Answer

The answer of Provide the structure of syndiotactic polystyrene....

Question 20

Maleic anhydride (below) undergoes chain-growth polymerization but not step-growth polymerizations. Why not?

Accepted Answer

The anhydride group is essenti...

Exam 26: Synthetic Polymers

When a plasticizer is added to a polymer, the overall effect is to ________ the crystallinity of the polymer and ________ its Tg.

Correct AnswerverifiedA

Explain why H2C CHCO2CH3 does not undergo cationic polymerization.

Correct AnswerverifiedNo reasonably stable...View AnswerShow Answer

Provide the structure of atactic polystyrene.

Correct AnswerverifiedShow Answer

Provide a mechanism to show how H2C CHCO2CH3 is polymerized using butyllithium as the initiator.

Correct AnswerverifiedShow Answer

Another name for a urethane is a(n) ________.

Correct AnswerverifiedShow Answer

The mechanism by which poly(methyl α-cyanoacrylate) formed was most likely ________.

Correct AnswerverifiedShow Answer

What type of polymer is Lexan?

Correct AnswerverifiedShow Answer

Provide the structure of syndiotactic polypropylene.

Correct Answerverified11eab5e1_c93f_ebf5_9bae_899fdf99c8b0_TB6199_00

Which of the following polymers can be classified as copolymers?

Correct AnswerverifiedShow Answer

What type of polymer is formed from ethylene glycol and a diester as monomer components?

Correct AnswerverifiedShow Answer

Which of the following is not an addition polymer?

Correct AnswerverifiedShow Answer

"Super" glues are typically composed of what polymer?

Correct AnswerverifiedShow Answer

Orlon is another name for what polymer?

Correct AnswerverifiedShow Answer

Provide the structure of isotactic polypropylene.

Correct AnswerverifiedShow Answer

Provide the structure of ε-caprolactam, the monomer from which Nylon 6 is formed.

Correct AnswerverifiedShow Answer

The Tg of a polymer is its ________.

Correct AnswerverifiedShow Answer

Provide the structure of isotactic polystyrene.

Correct Answerverified11eab5e1_c940_1307_9bae_dd81265e3c7f_TB6199_00

Which of the following represents a carbonate ester?

Correct AnswerverifiedShow Answer

Provide the structure of syndiotactic polystyrene.

Correct AnswerverifiedShow Answer

Maleic anhydride (below) undergoes chain-growth polymerization but not step-growth polymerizations. Why not?

Correct AnswerverifiedThe anhydride group is essenti...View AnswerShow Answer

When a plasticizer is added to a polymer, the overall effect is to the crystallinity of the polymer and its T_g.

Correct Answer
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Explain why H₂C CHCO₂CH₃ does not undergo cationic polymerization.

Correct Answer
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No reasonably stable...
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Provide a mechanism to show how H₂C CHCO₂CH₃ is polymerized using butyllithium as the initiator.

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11eab5e1_c93f_ebf5_9bae_899fdf99c8b0_TB6199_00

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The T_g of a polymer is its ________.

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The anhydride group is essenti...
View Answer