Deck 27: Synthetic Polymerse

Question 1

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ Small organic molecules that act as lubricants between polymer chains.

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Answer 1

plasticizers

Question 2

Draw the structure(s) of the monomer(s) used to make each of the following polymers.
Draw:

Answer 2

Question 3

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ a polyurethane

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Answer 3

Question 4

Do you expect nitroethylene to be more or less reactive than ethylene toward cationic polymerization? Explain.

Question 5

Exhibit 31-3
Classify each polymer below as step-growth or chain-growth.20. ANSWER:
chain-growth
POINTS:
1
21. ANSWER:
chain-growth
POINTS:
1
22. ANSWER:
step-growth
POINTS:
1
23. ANSWER:
step-growth
POINTS:
1
Exhibit 31-4
Draw the structure of the polymers obtained from the following reactions.
24. ANSWER: POINTS:
1
25. ANSWER: POINTS:
1
26. ANSWER: POINTS:
1
27. ANSWER: POINTS:
1
28. ANSWER: POINTS:
1
Monomer A is copolymerized with Monomer B and is found to have the following structure: The type of copolymer formed is:

A) a random copolymer
B) an alternating copolymer
C) a block copolymer
D) a graft copolymer

Question 6

Monomer A is copolymerized with Monomer B and is found to have the following structure: The type of copolymer formed is:

A) a random copolymer
B) an alternating copolymer
C) a block copolymer
D) a graft copolymer

Question 7

Draw the structure(s) of the monomer(s) used to make each of the following polymers.
Draw:

Question 8

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ a Ziegler-Natta catalyst

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 9

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ Bakelite is this type of polymer.

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 10

Draw the structure(s) of the monomer(s) used to make each of the following polymers.
Draw:

Question 11

Draw the structure(s) of the monomer(s) used to make each of the following polymers.
Draw:

Question 12

Do you expect nitroethylene to be more or less reactive than ethylene toward anionic polymerization? Explain.

Question 13

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
_____ General structure: M=CHR

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 14

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ Isotactic propylene

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 15

Rank the following monomers in order of increasing reactivity toward anionic polymerization (least reactive to most reactive).

A) III, II, IV, I
B) II, III, I, II
C) I, IV, III, II
D) IV, III, II, I

Question 16

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ Amorphous polymers that have the ability to stretch out and spring back to their original shape.

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 17

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
______ four-membered metal containing intermediate

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 18

Rank the following monomers in order of increasing reactivity toward cationic polymerization (least reactive to most reactive).

A) III, IV, I, II
B) II, I, IV, III
C) I, II, IV, III
D) IV, III, I, II

Question 19

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ Produced by reactions in which each bond in the polymer is formed independently of the others.

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 20

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
____ Polymers obtained when two or more different monomers are allowed to polymerize together.

A)BF₃ + H₂O
B)elastomer
C)chain-growth polymer
D)AL(CH₂CH₃)₃ + TiCl₄
E)
F)
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O)
P)

Question 21

Which of the following represents the general structure of a urethane?

A)

B)

C)

D)

Question 22

Which of the following is not an advantage of olefinic metathesis polymerization?

A) can be used in the presence of many functional groups
B) results in a unsaturated polymer
C) polymer is susceptible to further chemical changes
D) ROMP reactions run with high efficiency but ADMET reactions do not
E) All characterize olefinic metathesis polymerization procedures.

Question 23

In general, which of the following types of polymers would probably be the least crystalline?

A) isotactic
B) atactic
C) syndiotactic

Question 24

Consider the following diagram representing crystallites. Which type of polymer is represented?

A) thermoplastic
B) fiber
C) elastomer
D) thermosetting resins

Question 25

Draw the structure of the product produced by the acyclic diene metathesis (ADMET) of 1,6-heptadiene.

Question 26

Which type of polymer has a high glass transition temperature (T_g)?

A) thermoplastic
B) fiber
C) elastomer
D) thermosetting resins

Question 27

Exhibit 31-3
Classify each polymer below as step-growth or chain-growth.20. ANSWER:
chain-growth
POINTS:
1
21. ANSWER:
chain-growth
POINTS:
1
22. ANSWER:
step-growth
POINTS:
1
23. ANSWER:
step-growth
POINTS:
1
Exhibit 31-4
Draw the structure of the polymers obtained from the following reactions.
24. ANSWER: POINTS:
1
25. ANSWER: POINTS:
1
26. ANSWER: POINTS:
1
27. ANSWER: POINTS:
1
28. ANSWER: POINTS:
1
Monomer A is copolymerized with Monomer B and is found to have the following structure: -(-A-B-B-B-A-B-A-B-A-A-B-A-A-)-
The type of copolymer formed is:

A) a random copolymer
B) an alternating copolymer
C) a block copolymer
D) a graft copolymer

Question 28

Classify the following polymer.

A) isotactic
B) syndiotactic
C) atactic

Question 29

Which of the following monomers could produce atactic, isotactic, or syndiotactic polymers?

A) H₂C=CH₂
B) H₂C=CClH
C) H₂C=CCl₂
D) Cl₂C=CCl₂

Question 30

Classify the following polymer.

A) isotactic
B) syndiotactic
C) atactic

Question 31

Within a crystallite, the polymer chains are held together by:

A) disuflide bridges
B) hydrogen bonds
C) van der Walls forces
D) covalent bonds

Question 32

Draw two repeating units of the polymer formed by the reaction of 1,3-butadiene with the following substance. Atoms other than carbon and hydrogen are labeled.

Question 33

Which type of polymer is characterized by irregular chain length, low T_g, and only a small degree of cross-linking?

A) thermoplastic
B) fiber
C) elastomer
D) thermosetting resins

Question 34

Draw the structure of the monomer used to produce the following polymer segment using the ROMP method.

Question 35

Which of the following is not a property of a crystalline polymer?

A) unaffected by steric properties of substituent groups
B) generally hard and durable
C) crystalline regions become amorphous on heating
D) contain highly organized regions