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Provide the mechanism for backbiting of a radical chain end of polyethylene, which results in a butyl side chain on the polymer backbone.

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Which term describes the arrangement of substituents on the segment of polypropylene shown below? Which term describes the arrangement of substituents on the segment of polypropylene shown below? A) atactic B) isotactic C) syndiotactic D) stereoregular


A) atactic
B) isotactic
C) syndiotactic
D) stereoregular

E) A) and B)
F) A) and C)

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Provide the structure of poly(propylene oxide) that is formed by base catalyzed ring opening polymerization of the propylene oxide shown below. Provide the structure of poly(propylene oxide) that is formed by base catalyzed ring opening polymerization of the propylene oxide shown below.

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What is the common name of the following polymer? What is the common name of the following polymer? A) Kevlar B) PET C) Nylon-6 D) Nylon-6,6


A) Kevlar
B) PET
C) Nylon-6
D) Nylon-6,6

E) A) and D)
F) None of the above

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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) crystallite
B) elastomer
C) chain-growth polymer
D) Al(CH2CH3) 3 + TiCl4
E) 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) crystallite B) elastomer C) chain-growth polymer D) Al(CH<sub>2</sub>CH<sub>3</sub>) <sub>3</sub> + TiCl<sub>4</sub> E) F) G) thermoplastic H) homopolymer I) T<sub>m</sub> J) epoxy resins K) copolymers L) step-growth polymer M) catalyst N) T<sub>g</sub> O) P) ​ ​
F) 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) crystallite B) elastomer C) chain-growth polymer D) Al(CH<sub>2</sub>CH<sub>3</sub>) <sub>3</sub> + TiCl<sub>4</sub> E) F) G) thermoplastic H) homopolymer I) T<sub>m</sub> J) epoxy resins K) copolymers L) step-growth polymer M) catalyst N) T<sub>g</sub> O) P) ​ ​
G) thermoplastic
H) homopolymer
I) Tm
J) epoxy resins
K) copolymers
L) step-growth polymer
M) "catalyst"
N) Tg
O) 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) crystallite B) elastomer C) chain-growth polymer D) Al(CH<sub>2</sub>CH<sub>3</sub>) <sub>3</sub> + TiCl<sub>4</sub> E) F) G) thermoplastic H) homopolymer I) T<sub>m</sub> J) epoxy resins K) copolymers L) step-growth polymer M) catalyst N) T<sub>g</sub> O) P) ​ ​
P) 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) crystallite B) elastomer C) chain-growth polymer D) Al(CH<sub>2</sub>CH<sub>3</sub>) <sub>3</sub> + TiCl<sub>4</sub> E) F) G) thermoplastic H) homopolymer I) T<sub>m</sub> J) epoxy resins K) copolymers L) step-growth polymer M) catalyst N) T<sub>g</sub> O) P) ​ ​ ​
​

Q) A) and I)
R) E) and O)

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What type of polymer is shown? What type of polymer is shown? A) polyamide B) polyurea C) polyurethane D) polyamine


A) polyamide
B) polyurea
C) polyurethane
D) polyamine

E) C) and D)
F) B) and C)

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Which of the following relationships is not true?


A) Tg < Tm
B) Mw ≥ Mn
C) polydispersity index ≤ 1
D) Mn = (average degree of polymerization, n) × (molecular weight of repeat unit)

E) A) and B)
F) All of the above

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What is the name of the following polymer? What is the name of the following polymer? A) poly(hexamethylene adipate) B) poly(hexamethylene adipamide) C) poly(hexamethylene succinate) D) poly(tetramethylene adipamide)


A) poly(hexamethylene adipate)
B) poly(hexamethylene adipamide)
C) poly(hexamethylene succinate)
D) poly(tetramethylene adipamide)

E) A) and C)
F) None of the above

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