Concept explainers
Although styrene undergoes both cationic and anionic
a. c.
b. d.
(a)
Interpretation: The method, anionic or cationic polymerization preferred with the given substituted styrene is to be identified, and an explanation corresponding to it is to be stated.
Concept introduction: An alkene
Answer to Problem 30.43P
The given substituted styrene prefers to undergo cationic polymerization, due to presence of electron releasing group on benzene ring.
Explanation of Solution
The given substituted styrene resembles to
An alkene
An electron releasing group releases electron density towards benzene ring and stabilizes carbocation formed during the cationic polymerization, whereas an electron withdrawing group withdraws electron density towards itself and stabilizes carbanion formed during the anionic polymerization.
Since the given substituted styrene involves bonding of an electron releasing group to benzene ring, it prefers to undergo cationic polymerization.
(b)
Interpretation:The method, anionic or cationic polymerization preferred with the given substituted styrene is to be identified, and an explanation corresponding to it is to be stated.
Concept introduction: An alkene
Answer to Problem 30.43P
The given substituted styrene prefers to undergo anionic polymerization, due to presence of electron withdrawing group on benzene ring.
Explanation of Solution
The given substituted styrene resembles to
An alkene
An electron releasing group releases electron density towards benzene ring and stabilizes carbocation formed during the cationic polymerization, whereas an electron withdrawing group withdraws electron density towards itself and stabilizes carbanion formed during the anionic polymerization.
Since the given substituted styrene involves bonding of an electron withdrawing group to benzene ring, it prefers to undergo anionic polymerization.
(c)
Interpretation:The method, anionic or cationic polymerization preferred with the given substituted styrene is to be identified, and an explanation corresponding to it is to be stated.
Concept introduction: An alkene
Answer to Problem 30.43P
The given substituted styrene prefers to undergo anionic polymerization, due to presence of electron withdrawing group on benzene ring.
Explanation of Solution
The given substituted styrene resembles to
An alkene
An electron releasing group releases electron density towards benzene ring and stabilizes carbocation formed during the cationic polymerization, whereas an electron withdrawing group withdraws electron density towards itself and stabilizes carbanion formed during the anionic polymerization.
Since the given substituted styrene involves bonding of an electron withdrawing group to benzene ring, it prefers to undergo anionic polymerization.
(d)
Interpretation:The method, anionic or cationic polymerization preferred with the given substituted styrene is to be identified, and an explanation corresponding to it is to be stated.
Concept introduction: An alkene
Answer to Problem 30.43P
The given substituted styrene prefers to undergo cationic polymerization, due to presence of electron releasing group on benzene ring.
Explanation of Solution
The given substituted styrene resembles to
An alkene
An electron releasing group releases electron density towards benzene ring and stabilizes carbocation formed during the cationic polymerization, whereas an electron withdrawing group withdraws electron density towards itself and stabilizes carbanion formed during the anionic polymerization.
Since the given substituted styrene involves bonding of an electron releasing group to benzene ring, it prefers to undergo cationic polymerization.
(a) The given substituted styrene prefers to undergo cationic polymerization, due to presence of an electron releasing group on benzene ring.
(b) The given substituted styrene prefers to undergo anionic polymerization, due to presence of an electron withdrawing group on benzene ring.
(c) The given substituted styrene prefers to undergo anionic polymerization, due to presence of an electron withdrawing group on benzene ring.
(d) The given substituted styrene prefers to undergo cationic polymerization, due to presence of an electron releasing group on benzene ring.
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Chapter 30 Solutions
ORGANIC CHEMISTRY W/BIO...-STUD.SOLN.
- Consider monomers A–C. (a) Rank the monomers in order of increasingreactivity in cationic polymerization. (b) Rank the monomers in order ofincreasing reactivity in anionic polymerization.arrow_forwardif a lower polydispersity us desired, which would be more acceptable?arrow_forwardWhy propagation step produce energy in chain growth polymerizations?arrow_forward
- Rank the following monomers in order of increasing reactivity toward anionic polymerization (least reactive to most reactive).arrow_forwardNeed help with part Darrow_forwardRank the following monomers in order of increasing reactivity toward cationic polymerization (least reactive to most reactive).arrow_forward
- Which polymer would be more flexible at room temperature poly(methyl acrylate) or poly(methyl methylcrylate)? Why? Support and explain answerarrow_forwardNeed assistance with Part D.arrow_forward(a) Which monomer is most likely to undergo anionic polymerization? Justify your choice. ( b)Which one ismost likely to undergo cationic polymerization? Justify your choice.arrow_forward
- a) Please draw the retrosynthesis of this polymer below.b) Draw the structure of another polymer that can react with this polymer to generate soft material.c) Draw the structure of a cross-linker could be used for the reaction in question b). .arrow_forwardDraw a stepwise mechanism for the following polymerization reaction.arrow_forwardPART D ONLYarrow_forward
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co