Problem 1: It is desired to prepare polyester with the number average molecular weight, M₁~ 5000 g/mol by reacting of 1 mol butane-1,4 diol (HO-CH2-CH2-CH2-CH2-OH) with 1 mol of adipic acid (HOOC-CH2-CH2-CH2-CH2-COOH). (a) Write chemical equation illustrating synthesis of the polyester. (b) Calculate the value of the monomer conversion at which the reaction should be stopped to obtain this polymer, assuming perfect stoichiometric balance. What would be polydispersity index for the polymer obtained? (c) Assuming that 0.5 mol % of the diol is lost to polymerization by a side reaction (dehydratation to a non-reactive substance), what would be the value of M₁ if the reaction was carried out to the same extent as in part (b). (d) For the polymerization process value of polymerization rate constant is 1.5*10-2 L/(mol*s) at 100° C. How long would it take to prepare the polyester with the number average molecular weight, M₁5,000 g/mol at 100 °C? There is no diol loss for this part of the problem. Hint: all equations for step-growth polymerization include concentrations of functional groups
Problem 1: It is desired to prepare polyester with the number average molecular weight, M₁~ 5000 g/mol by reacting of 1 mol butane-1,4 diol (HO-CH2-CH2-CH2-CH2-OH) with 1 mol of adipic acid (HOOC-CH2-CH2-CH2-CH2-COOH). (a) Write chemical equation illustrating synthesis of the polyester. (b) Calculate the value of the monomer conversion at which the reaction should be stopped to obtain this polymer, assuming perfect stoichiometric balance. What would be polydispersity index for the polymer obtained? (c) Assuming that 0.5 mol % of the diol is lost to polymerization by a side reaction (dehydratation to a non-reactive substance), what would be the value of M₁ if the reaction was carried out to the same extent as in part (b). (d) For the polymerization process value of polymerization rate constant is 1.5*10-2 L/(mol*s) at 100° C. How long would it take to prepare the polyester with the number average molecular weight, M₁5,000 g/mol at 100 °C? There is no diol loss for this part of the problem. Hint: all equations for step-growth polymerization include concentrations of functional groups
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
Related questions
Question
PART D ONLY
Transcribed Image Text:Problem 1:
It is desired to prepare polyester with the number average molecular weight, Mn- 5000 g/mol
by reacting of 1 mol butane-1,4 diol (HO-CH2-CH2-CH2-CH2-OH) with 1 mol of adipic acid
(HOOC-CH2-CH2-CH2-CH2-COOH).
(a) Write chemical equation illustrating synthesis of the polyester.
(b) Calculate the value of the monomer conversion at which the reaction should be stopped to
obtain this polymer, assuming perfect stoichiometric balance. What would be polydispersity
index for the polymer obtained?
(c) Assuming that 0.5 mol % of the diol is lost to polymerization by a side reaction
(dehydratation to a non-reactive substance), what would be the value of Mn if the reaction was
carried out to the same extent as in part (b).
(d) For the polymerization process value of polymerization rate constant is 1.5*102 L/(mol*s) at
100° C. How long would it take to prepare the polyester with the number average molecular
weight, M, 5,000 g/mol at 100 ° C? There is no diol loss for this part of the problem.
Hint: all equations for step-growth polymerization include concentrations of functional groups
reacting and not concentrations of monomers.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 6 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY