g. How are the reaction mechanisms for radical chain polymerization and anionic chain polymerization alike, and how do they differ? How can this difference be exploited to produce a polymer with a very high number-average molar mass and/or a very narrow range of molar masses?

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a. Draw short lengths of the following polymers, indicating the repeating unit for each polymer.
i. polypropylene
ii. polyvinyl chloride
iii. Nylon 6.6
b. For each polymer, state whether it would be produced by a chain-growth or step-growth reaction. Explain your reasons for each polymer and suggest a suitable initiator or
catalyst, where appropriate.
c. For each polymer, list the principal intermolecular forces that will be present.
d. How do these forces affect the relative values of the glass-transition temperatures, Tg. for these polymers? Please explain your answers.
e. Explain which of these polymers could potentially have atactic, isotactic and syndiotactic forms. How would tacticity affect the structure and physical properties of these
polymers?
f. Discuss the differences between the radical chain-growth and step-growth mechanisms of polymerization. Explain any changes in the molar-mass distributions of the resulting
polymers as the reactions progress.
g. How are the reaction mechanisms for radical chain polymerization and anionic chain polymerization alike, and how do they differ? How can this difference be exploited to
produce a polymer with a very high number-average molar mass and/or a very narrow range of molar masses?
Transcribed Image Text:a. Draw short lengths of the following polymers, indicating the repeating unit for each polymer. i. polypropylene ii. polyvinyl chloride iii. Nylon 6.6 b. For each polymer, state whether it would be produced by a chain-growth or step-growth reaction. Explain your reasons for each polymer and suggest a suitable initiator or catalyst, where appropriate. c. For each polymer, list the principal intermolecular forces that will be present. d. How do these forces affect the relative values of the glass-transition temperatures, Tg. for these polymers? Please explain your answers. e. Explain which of these polymers could potentially have atactic, isotactic and syndiotactic forms. How would tacticity affect the structure and physical properties of these polymers? f. Discuss the differences between the radical chain-growth and step-growth mechanisms of polymerization. Explain any changes in the molar-mass distributions of the resulting polymers as the reactions progress. g. How are the reaction mechanisms for radical chain polymerization and anionic chain polymerization alike, and how do they differ? How can this difference be exploited to produce a polymer with a very high number-average molar mass and/or a very narrow range of molar masses?
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