For the cationic polymerization of ethyl vinyl ether initiated with a water/aluminum chloride initiator system shown below, give the mechanisms and products for the following reactions. n H₂O AICI 3 a) initiation (include equilibrium for initiator creation), b) propagation, and c) termination by initiator recombination.

For the cationic polymerization of ethyl vinyl ether initiated with a water/aluminum chloride initiator system shown below, give the mechanisms and products for the following reactions. n H₂O AICI 3 a) initiation (include equilibrium for initiator creation), b) propagation, and c) termination by initiator recombination.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter29: Organic Polymer Chemistry

Section: Chapter Questions

Problem 29.12P

See similar textbooks

Similar questions

Define the Mechanism - Cationic Polymerization of CH2=CHZ ?
Explain the Mechanism - Radical Polymerization of CH2=CHPh
5.6 Nylon-11 is poly(Ω-aminoundecanoic acid). In the polymerization of Ω-aminoundec-anoic acid, H2N(CH2)10COOH, to produce this polymer, what weight fraction of the reaction mixture will have the structure –[-NH–(CH2)10–CO-]100– when 99% of the functional groups have reacted ? [Ans. 0.0037]
On the same axes, sketch the extent of reaction (p) vs time for (i) uncatalyzed and (ii) catalyzed condensation polymerizations. On a new set of axes, sketch the number-average molecular weight (Mn) vs time for (i) uncatalyzed and (ii) catalyzed condensation polymerizations
6. Nylon-11 is poly(Ω-aminoundecanoic acid). In the polymerization of Ω-aminoundec-anoic acid, H2N(CH2)10COOH, to produce this polymer, what weight fraction of the reaction mixture will have the structure –[-NH–(CH2)10–CO-]100– when 99% of the functional groups have reacted ?
8. When an equilibrium step-growth polymerization is 99% complete, what fraction of the reaction mixture is still monomer (a) on mole basis and (b) on weight basis ?
Chain branching is not as common with anionic polymerization as it is with free-radical polymerization and cationic polymerization. Propose a mechanism for chain branching in the polymerization of acrylonitrile.
Write a mechanism for the polymerization of methyl vinyl ether initiated by 2-chloro-2-phenylpropane and SnCl4. Label the initiation, propagation, and termination steps.
By measuring molecular weight as a function of monomer conversion, describe how youcan tell whether the polymerization of an unknown monomer was proceeding by a stepgrowth or chain-growth mechanism.
Draw a chemical reaction scheme for the benzoyl peroxide-initiated polymerization of vinyl chloride showing the initiation, propagation and termination steps. The termination steps should include combination, disproportionation and transfer to initiator. (Assume that there is no secondary decomposition of primary radicals and that regioselective in the propagating step is 100% H-T).
In a non-acid catalyzed step-growth polymerization between A-A and B-B monomers, the A groups are titratable by aqueous base (1 N) and [A-A] [B-B) = 6 mol.kg-1. a) What is the DP if it takes 100 mL of base to neutralize the reaction mixture at 700 minutes of reaction time (assuming the initial total weight 500 g)?...
Use mechanisms to show how monomers polymerize under acidic, basic, orfree-radical conditions. For chain-growth polymerization, determine whether the reactive end is more stable as a cation (acidic conditions), anion (basic conditions), or free radical (radical initiator). For step-growth polymerization, consider the mechanism of the condensation.