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

Question 2

Provide the structure of isotactic polystyrene.

Accepted Answer

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

Question 3

Provide the structure of syndiotactic polypropylene.

Accepted Answer

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

Question 4

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

Accepted Answer

Question 5

Provide the structure of syndiotactic polystyrene.

Accepted Answer

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

Question 6

What type of polymer is Lexan?

Accepted Answer

A)  polyester 
B)  polyamide 
C)  polyurethane 
D)  polycarbonate 
A)  polyester 
B)  polyamide 
C)  polyurethane 
D)  polycarbonate

Question 7

Which of the following represents a carbonate ester?

Accepted Answer

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

Question 8

Provide the structure of atactic polystyrene.

Accepted Answer

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

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, & 4 
A)  1 & 2 
B)  2 & 4 
C)  1 & 4 
D)  2 & 3 
E)  1, 3, & 4

Question 10

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

Accepted Answer

A)  anionic addition 
B)  cationic addition 
C)  radical addition 
D)  condensation 
A)  anionic addition 
B)  cationic addition 
C)  radical addition 
D)  condensation

Question 11

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

Accepted Answer

The anhydride group is essenti

Question 12

Provide the structure of isotactic polypropylene.

Accepted Answer

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

Question 13

Which of the following is not an addition polymer?

Accepted Answer

A)  polyethylene 
B)  Orlon 
C)  Plexiglas 
D)  Kevlar 
E)  Teflon 
A)  polyethylene 
B)  Orlon 
C)  Plexiglas 
D)  Kevlar 
E)  Teflon

Question 14

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

Accepted Answer

A)  carbamate ester 
B)  carbonate ester 
C)  orthoester 
D)  aryl diisocyanate 
E)  carbamic acid 
A)  carbamate ester 
B)  carbonate ester 
C)  orthoester 
D)  aryl diisocyanate 
E)  carbamic acid

Question 15

Explain why H2C   
CHCO2CH3 does not undergo cationic polymerization.

Accepted Answer

No reasonably stable

Question 16

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

Question 17

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

Question 18

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

Question 19

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

Question 20

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...

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.

Provide the structure of isotactic polystyrene.

Provide the structure of syndiotactic polypropylene.

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

Provide the structure of syndiotactic polystyrene.

What type of polymer is Lexan?

Which of the following represents a carbonate ester?

Provide the structure of atactic polystyrene.

Which of the following polymers can be classified as copolymers?

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

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

Provide the structure of isotactic polypropylene.

Which of the following is not an addition polymer?

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

Explain why H2C CHCO2CH3 does not undergo cationic polymerization.

Orlon is another name for what polymer?

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

"Super" glues are typically composed of what polymer?

The Tg of a polymer is its ________.

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

Structure and Bonding

Acids and Bases; Functional Groups

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides; Nucleophilic Substitution

Structure and Synthesis of Alkenes; Elimination

Reactions of Alkenes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Lipids

Filters

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

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

Explain why H₂C CHCO₂CH₃ does not undergo cationic polymerization.

The T_g of a polymer is its ________.