Question 1

Provide the structure of poly(methyl α-methacrylate).

Accepted Answer

The answer of Provide the structure of poly(methyl α-methacrylate)....

Question 2

Plexiglas is a:

Accepted Answer

A)  polyamide. 
B)  polyester. 
C)  polycarbonate. 
D)  polyurethane. 
E)  none of the above 
A)  polyamide. 
B)  polyester. 
C)  polycarbonate. 
D)  polyurethane. 
E)  none of the above

Question 3

When ethylene is polymerized by free-radical initiation, what type of polyethylene is formed?

Accepted Answer

A)  low-density; highly branched 
B)  low-density; unbranched and highly linear 
C)  high-density; highly branched 
D)  high-density; unbranched and highly linear 
E)  high-density; highly crystalline 
A)  low-density; highly branched 
B)  low-density; unbranched and highly linear 
C)  high-density; highly branched 
D)  high-density; unbranched and highly linear 
E)  high-density; highly crystalline

Question 4

Which type of polymerization most commonly results in branched, atactic polymers: anionic, cationic or free-radical?

Accepted Answer

The answer of Which type of polymerization most commonly results...

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

Question 6

Which of the following is least readily formed by cationic polymerization?

Accepted Answer

A)  poly(acrylonitrile) 
B)  poly(isobutylene) 
C)  poly(propylene) 
D)  polystyrene 
E)  All of the above have equal propensity to undergo cationic polymerization. 
A)  poly(acrylonitrile) 
B)  poly(isobutylene) 
C)  poly(propylene) 
D)  polystyrene 
E)  All of the above have equal propensity to undergo cationic polymerization.

Question 7

Which of the following represents a carbonate ester?

Accepted Answer

A)  RCO2R' 
B) 1ROCO2R 
C)  RCOR 
D)  (RO)3CR 
E)  RNHCO2R 
A)  RCO2R' 
B) 1ROCO2R 
C)  RCOR 
D)  (RO)3CR 
E)  RNHCO2R

Question 8

Super glue shown below is most likely constructed under what type of mechanism?

Accepted Answer

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

Question 9

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

Accepted Answer

The answer of Draw the structure of the polymer produced...

Question 10

Which of the following is a condensation polymer?

Accepted Answer

A)  poly(ethylene terephthalate) 
B)  poly(tetrafluoroethylene) 
C)  polystyrene 
D)  poly(vinyl chloride) 
E)  poly(methyl α-methacrylate) 
A)  poly(ethylene terephthalate) 
B)  poly(tetrafluoroethylene) 
C)  polystyrene 
D)  poly(vinyl chloride) 
E)  poly(methyl α-methacrylate)

Question 11

What kind of polymer is produced in the following reaction?

Accepted Answer

A)  a polycarbonate 
B)  poly(acrylonitrile) 
C)  a polyester 
D)  polyurethane 
E)  a synthetic rubber 
A)  a polycarbonate 
B)  poly(acrylonitrile) 
C)  a polyester 
D)  polyurethane 
E)  a synthetic rubber

Question 12

Between Tg and Tm, crystalline polymers exist as:

Accepted Answer

A)  thermoplastics which are flexible and moldable. 
B)  liquids which are flexible and moldable. 
C)  glasses of low flexibility. 
D)  thermoplastics which are readily extruded to form fibers. 
E)  liquids which are readily extruded to form fibers. 
A)  thermoplastics which are flexible and moldable. 
B)  liquids which are flexible and moldable. 
C)  glasses of low flexibility. 
D)  thermoplastics which are readily extruded to form fibers. 
E)  liquids which are readily extruded to form fibers.

Question 13

Draw one complete repeating segment of the polymer resulting from the two monomer units below.

Accepted Answer

The answer of Draw one complete repeating segment of the...

Question 14

Orlon is another name for what polymer?

Accepted Answer

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

Question 15

Propose a synthesis of poly(vinyl alcohol) from H2C=CHO2CCH3.

Accepted Answer

1. (PhCO₂)₂

Question 16

If the side groups of a polymer chain are generally on the same side of the polymer backbone, the polymer is called:

Accepted Answer

A)  atactic. 
B)  syndiotactic. 
C)  transiotactic. 
D)  cisisotactic. 
E)  isotactic. 
A)  atactic. 
B)  syndiotactic. 
C)  transiotactic. 
D)  cisisotactic. 
E)  isotactic.

Question 17

Which tend to exhibit a higher degree of crystallinity, isotactic or atactic polymers? Explain briefly.

Accepted Answer

Isotactic polymers are more cr

Question 18

The mechanism by which this poly(methyl a-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 19

In polymerization reactions what purpose does benzoyl peroxide usually serve?

Accepted Answer

Benzoyl peroxide usually serve

Question 20

Cis-1,4-Polybutadiene is one form of synthetic rubber. Provide the structure of this polymer.

Accepted Answer

The answer of Cis-1,4-Polybutadiene is one form of synthetic rubber....

Exam 26: Synthetic Polymers

Provide the structure of poly(methyl α-methacrylate).

Plexiglas is a:

When ethylene is polymerized by free-radical initiation, what type of polyethylene is formed?

Which type of polymerization most commonly results in branched, atactic polymers: anionic, cationic or free-radical?

Another name for a urethane is a(n):

Which of the following is least readily formed by cationic polymerization?

Which of the following represents a carbonate ester?

Super glue shown below is most likely constructed under what type of mechanism?

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

Which of the following is a condensation polymer?

What kind of polymer is produced in the following reaction?

Between Tg and Tm, crystalline polymers exist as:

Draw one complete repeating segment of the polymer resulting from the two monomer units below.

Orlon is another name for what polymer?

Propose a synthesis of poly(vinyl alcohol) from H2C=CHO2CCH3.

If the side groups of a polymer chain are generally on the same side of the polymer backbone, the polymer is called:

Which tend to exhibit a higher degree of crystallinity, isotactic or atactic polymers? Explain briefly.

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

In polymerization reactions what purpose does benzoyl peroxide usually serve?

Cis-1,4-Polybutadiene is one form of synthetic rubber. Provide the structure of this polymer.

Introduction and Review

Structure and Properties of Organic Molecules

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Alkynes

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

Propose a synthesis of poly(vinyl alcohol) from H₂C=CHO₂CCH₃.