Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 31.1, Problem 1P
Order the following monomers with respect to their expected reactivity toward cationic
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Draw the structures of the polymers obtained from the following monomers and name
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(i)
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HO
LOH
(iii)
охо
(v)
(1) Explain the following polymerization mechanism by showing
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structures of the intermediates of the first, second, and third reaction
with the monomer and catalysts).
LnW=CHR'
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(2) Why is HT-3-hexyl polythiophene better in conductivity than other
regioisomers? Explain the reasons from the intramolecular and
intermolecular aspects, respectively.
Poly(butylene terephthalate) is a hydrophobic plastic material widely used in automotive ignition systems. Suggest what monomers might be used to synthesize this polymer and how the polymerization might beaccomplished.
Chapter 31 Solutions
Organic Chemistry
Ch. 31.1 - Order the following monomers with respect to their...Ch. 31.1 - Order the following monomers with respect to their...Ch. 31.1 - Prob. 3PCh. 31.2 - Prob. 4PCh. 31.2 - Prob. 5PCh. 31.3 - Prob. 6PCh. 31.3 - Prob. 7PCh. 31.4 - Prob. 8PCh. 31.4 - Show the mechanism of the nucleophilic addition...Ch. 31.5 - Prob. 10P
Ch. 31.6 - Prob. 11PCh. 31.6 - Prob. 12PCh. 31.SE - Prob. 13VCCh. 31.SE - Prob. 14VCCh. 31.SE - Prob. 15MPCh. 31.SE - The polyurethane foam used for home insulation...Ch. 31.SE - Prob. 17MPCh. 31.SE - Prob. 18MPCh. 31.SE - Prob. 19MPCh. 31.SE - Identify the monomer units from which each of the...Ch. 31.SE - Prob. 21APCh. 31.SE - Draw the structure of Kodel, a polyester prepared...Ch. 31.SE - Show the structure of the polymer that results...Ch. 31.SE - Prob. 24APCh. 31.SE - Prob. 25APCh. 31.SE - 1, 3-Cyclopentadiene undergoes thermal...Ch. 31.SE - Prob. 27APCh. 31.SE - Prob. 28APCh. 31.SE - Prob. 29APCh. 31.SE - Prob. 30APCh. 31.SE - Prob. 31APCh. 31.SE - Prob. 32APCh. 31.SE - Prob. 33APCh. 31.SE - Prob. 34APCh. 31.SE - Prob. 35AP
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- Order the following monomers with respect to their expected reactivity toward anionic polymerization, and explain your answer:arrow_forwardPolymers prepared by condensation polymerization are usually of high molecular weights, but the student has been finding difficulties to produce a high molecular weight polymer using this technique in the lab. Give two reasons why this might be the case.arrow_forwardA3 Anionic polymerization of styrene is generally known to produce polymers with a narrow molecular weight distribution. Explain the reason for this.arrow_forward
- What is the degree of polymerization of each of the following polymers with molar mass 100,000 g/mol ? (a) polyacrylonitrile (b) polycaprolactam (c) poly(trimethylene ethylene-urethane) [Ans. (a) 1887; (b) 885; (c) 532] 1.3arrow_forwardGrubb's catalyst ROMP (d) Demonstrate that the polymerization of propene with a simple Cp2ZrCl₂ catalyst would give rise to atactic polypropylenearrow_forwardpolystyrene vs polyethylene I need to compare the mechanical and thermal properties of polystyrene obtained by catonic catalysis of styrene, and compare them with polyethylene obtained by metallocene catalysis.arrow_forward
- Qq.27. Subject :- Chemistryarrow_forwardWhat is the basic mechanism of an Anionic polymer (acrylic acid based as carbomers) in regards to function and “activation”? How do they work and thicken?arrow_forwardA synthetic polymer was produced via addition polymerization to a degree of polymerization of 925 and an average molecular weight of 40,700 g/mol. Of those listed below, which is most likely that polymer? Explain and supportarrow_forward
- A boron-siloxane cross linked polymer was formed from the reaction between dichlorodimethylsilane in diethyl ether with deionised water. Which was neutralised with sodium bicarbonate solution before being turned into a polymer upon the addition of boric acid. What is the structure of the polymer synthesised and what is the molecular weight of one monomer unit of this boron-siloxane cross linked polymer?arrow_forwardPolystyrene is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. H H H Polystyrene (i) Draw the structure of styrene. Outline the mechanism when styrene reacts with HCl, following (ii) Markovnikov's rule.arrow_forwardChain branching is not as common with anionic polymerization as it is with free-radical polymerization and cationic polymerization. Compare the relative stabilities of the intermediates in this mechanism with those you drew for chain branching in the cationic polymerization of styrene. Explain why chain branching is less common in this anionic polymerization.arrow_forward
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