Question 4. Methylvinyl ketone (MVK) can undergo a polymerization reaction in the presence of AIBN initiator to produce a poly(methylvinyl ketone) polymer according to the scheme below. NEC H3C CH3 N=N₁₂ CH3 CH3 CEN azobisisobutyronitrile (AIBN) heat CH3 methylvinyl ketone (MVK) H₁C. CH3 NEC- n poly(methylvinyl ketone) a) Provide the mechanism for heat-induced decomposition of the AIBN initiator to produce a reactive radical species. heat CH3 NECNN CEN H3C CH3 CH3 19 01010 b) Provide a mechanism for the initiation step in the MVK polymerization reaction: 10 c) Show the mechanism for the propagation step to form an MVK oligomer with n = 3:
Question 4. Methylvinyl ketone (MVK) can undergo a polymerization reaction in the presence of AIBN initiator to produce a poly(methylvinyl ketone) polymer according to the scheme below. NEC H3C CH3 N=N₁₂ CH3 CH3 CEN azobisisobutyronitrile (AIBN) heat CH3 methylvinyl ketone (MVK) H₁C. CH3 NEC- n poly(methylvinyl ketone) a) Provide the mechanism for heat-induced decomposition of the AIBN initiator to produce a reactive radical species. heat CH3 NECNN CEN H3C CH3 CH3 19 01010 b) Provide a mechanism for the initiation step in the MVK polymerization reaction: 10 c) Show the mechanism for the propagation step to form an MVK oligomer with n = 3:
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter23: Polymeric Materials And Soft Condensed Matter
Section: Chapter Questions
Problem 24AP
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Transcribed Image Text:Question 4.
Methylvinyl ketone (MVK) can undergo a polymerization reaction in the presence
of AIBN initiator to produce a poly(methylvinyl ketone) polymer according to the
scheme below.
NEC
H3C
CH3
`N=N₂
CH3
CEN
CH3
azobisisobutyronitrile (AIBN)
CH3
methylvinyl ketone (MVK)
heat
CH3
H3C
NEC
n
poly(methylvinyl ketone)
a) Provide the mechanism for heat-induced decomposition of the AIBN initiator
to produce a reactive radical species.
CH3
NEC
H3C
`N = N
heat
CH3
CEN
CH3
10
0-0
b) Provide a mechanism for the initiation step in the MVK polymerization
reaction:
c) Show the mechanism for the propagation step to form an MVK oligomer with
n = 3:
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sidare tass
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ha
et
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