Part 1. Draw monomer units of the following products and draw their reaction mechanism (with arrow pushing)Temporary cross-linked polymerUsing: 4% polyvinyl alcohol+ methyl red + 4% sodium borate

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Answered: Part 1. Draw monomer units of the…

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

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Plywood and particle board are often glued with cheap, waterproof urea-formaldehyde resins. Two to three moles of formaldehyde are mixed with one mole of urea and a little ammonia as a basic catalyst. The reaction is allowed to proceed until the mixture becomes syrupy, and then it is applied to the wood surface. The wood surfaces are held together under heat and pressure, while polymerization continues and cross-linking takes place. Propose a mechanism for the base-catalyzed condensation of urea with formaldehyde to give a linear polymer, and then show how further condensation leads to cross-linking.
2. Provide the product, arrow-pushing mechanism (only one) and polymer notation for the following polymerization. 304-00-- H₂N- -NH₂ DMF
please provide detailed solution and give the explanation of the correct and incorrect options... Please give answer as soon as possible
Draw a detailed stepwise mechanim showing the linkage that would be formed of the polymerization reactions below.
Draw the brief arrow pushing mechanism of the formation of this polymer(synthesis of Nylon (6,6)
Radical polymerization of styrene gives a linear polymer. Radical polymerization of a mixture of styrene and 1,4-divinylbenzene gives a cross-linked network polymer of the type shown in Figure 29.1. Show by drawing structural formulas how incorporation of a few percent of 1,4-divinylbenzene in the polymerization mixture gives a cross-linked polymer.
Show the structure of the polymer that results from heating the following diepoxide and diamine:
2. Write the reaction for the production of the linear polyester (Phthalic anhydride) including the repeat unit for the product. Note. This is a step growth reaction. Please also explain the type of polymerisation occuring in the synthesis of this polyester
4. The following reaction scheme shows the radical polymerization of styrene to make polystyrene. a) Add electron-pushing arrows to show the mechanisms of steps 1-3. Determine if these are initiation, propagation, or termination steps. b) Radical polymerization is often performed in the absence of O2 because the oxygen radical can couple with the polymer radical to terminate polymerization. Propose electron-pushing arrows for step 4 and predict the product of that step.
b. Draw the arrow pushing mechanism for the polycondensation of the following two monomers and the structure of the resulting polymer. OH HO
Show by means of chemical equations the initiation, propagation, transfer and termination steps (if any) in the linear chain polymerizations a) – d) below. For each reaction, clearly show the initiating species, active center, repeating unit and end- groups of the polymer chains that are formed and comment on the mechanism involved: a) Styrene initiated with potassium amide in liquid ammonia as solvent. b) Isobutylene (2-methylpropene) initiated with boron trichloride/tert-butyl chloride as catalyst in methyl chloride as solvent. c) 1,3-Butadiene initiated with n-buytylithium (CAH9LI) in tetrahydrofuran (THF) at 30°C and quenched with ethylene oxide followed by acidification. d) Propylene oxide initiated with potassium methoxide in methanol as solvent.
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Part 1. Draw monomer units of the following products and draw their reaction mechanism (with arrow pushing) Temporary cross-linked polymer Using: 4% polyvinyl alcohol+ methyl red + 4% sodium borate