(i) Calculate the stoichiometric imbalance factor in a polymerization reaction between adipic acid and hexamethylene diamine at the percent conversion of 0.994 to obtain poly(hexamethylene adipate) with number average molecular weigth of 19,000 g/mol. Given that the molecular weight of the repeat unit of poly(hexamethylene adipate) is 113 g/mol. (ii) If in the above polymerization, 10 mol % of excess diamine were to be used in the polymerization reaction, what number average molecular weight would be obtained if the reaction were carried to 93 % conversion of monomer? (iii) Explain how the increase in molecular weight of polymer affect the rate of chemical reaction in the step-growth polymerization.
(i) Calculate the stoichiometric imbalance factor in a polymerization reaction between adipic acid and hexamethylene diamine at the percent conversion of 0.994 to obtain poly(hexamethylene adipate) with number average molecular weigth of 19,000 g/mol. Given that the molecular weight of the repeat unit of poly(hexamethylene adipate) is 113 g/mol. (ii) If in the above polymerization, 10 mol % of excess diamine were to be used in the polymerization reaction, what number average molecular weight would be obtained if the reaction were carried to 93 % conversion of monomer? (iii) Explain how the increase in molecular weight of polymer affect the rate of chemical reaction in the step-growth polymerization.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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![(i)
Calculate the stoichiometric imbalance factor in a polymerization reaction between
adipic acid and hexamethylene diamine at the percent conversion of 0.994 to obtain
poly(hexamethylene adipate) with number average molecular weigth of 19,000 g/mol.
Given that the molecular weight of the repeat unit of poly(hexamethylene adipate) is 113
g/mol.
(ii) If in the above polymerization, 10 mol % of excess diamine were to be used in the
polymerization reaction, what number average molecular weight would be obtained if the
reaction were carried to 93 % conversion of monomer?
(iii) Explain how the increase in molecular weight of polymer affect the rate of chemical
reaction in the step-growth polymerization.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4bb204b4-a95f-406f-96a1-7a0fec101ddc%2F875265b1-0f8d-47ef-a4ab-944c93a95456%2Fmsw97sh_processed.png&w=3840&q=75)
Transcribed Image Text:(i)
Calculate the stoichiometric imbalance factor in a polymerization reaction between
adipic acid and hexamethylene diamine at the percent conversion of 0.994 to obtain
poly(hexamethylene adipate) with number average molecular weigth of 19,000 g/mol.
Given that the molecular weight of the repeat unit of poly(hexamethylene adipate) is 113
g/mol.
(ii) If in the above polymerization, 10 mol % of excess diamine were to be used in the
polymerization reaction, what number average molecular weight would be obtained if the
reaction were carried to 93 % conversion of monomer?
(iii) Explain how the increase in molecular weight of polymer affect the rate of chemical
reaction in the step-growth polymerization.
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