Living chain polymerization of monomer X follows the first-order kinetics. The corresponding propagation rate constant (kp) was determined by gas chromatography (GC), with the following monomer concentrations measured at different polymerization times, assuming instant initiation: Polymerization time (min) 0 2 5 10 15 [X]t (M) 1.80 1.52 1.27 0.95 0.74 0.50 0.25 20 30 Plot the dependence of -In([X]/[X]) on time using software specialized for graphs (e.g., Origin, SigmaPlot, not MS Excell!) and perform the linear data fitting. Export the graph in TIFF format and paste it below as an image. Make sure the graph is graphically appealing! b) From this fitting, calculate the kp of polymerization, assuming the living character of polymerization and an initial initiator concentration (an thus the constant concentration of growing centers) of 0.09 M c) What is the theoretical degree of polymerization (DP) of the prepared polymer? We assume full monomer conversion, complete initiation, absence of termination and any chain transfers.
Living chain polymerization of monomer X follows the first-order kinetics. The corresponding propagation rate constant (kp) was determined by gas chromatography (GC), with the following monomer concentrations measured at different polymerization times, assuming instant initiation: Polymerization time (min) 0 2 5 10 15 [X]t (M) 1.80 1.52 1.27 0.95 0.74 0.50 0.25 20 30 Plot the dependence of -In([X]/[X]) on time using software specialized for graphs (e.g., Origin, SigmaPlot, not MS Excell!) and perform the linear data fitting. Export the graph in TIFF format and paste it below as an image. Make sure the graph is graphically appealing! b) From this fitting, calculate the kp of polymerization, assuming the living character of polymerization and an initial initiator concentration (an thus the constant concentration of growing centers) of 0.09 M c) What is the theoretical degree of polymerization (DP) of the prepared polymer? We assume full monomer conversion, complete initiation, absence of termination and any chain transfers.
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
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![Living chain polymerization of monomer X follows the first-order kinetics. The corresponding
propagation rate constant (kp) was determined by gas chromatography (GC), with the
following monomer concentrations measured at different polymerization times, assuming
instant initiation:
Polymerization time (min)
0
2
5
10
15
[X]t (M)
1.80
1.52
1.27
0.95
0.74
0.50
0.25
20
30
Plot the dependence of -In([X]/[X]) on time using software specialized for graphs (e.g.,
Origin, SigmaPlot, not MS Excell!) and perform the linear data fitting. Export the graph in TIFF
format and paste it below as an image. Make sure the graph is graphically appealing!
b) From this fitting, calculate the kp of polymerization, assuming the living character of
polymerization and an initial initiator concentration (an thus the constant concentration of
growing centers) of 0.09 M
c) What is the theoretical degree of polymerization (DP) of the prepared polymer? We
assume full monomer conversion, complete initiation, absence of termination and any chain
transfers.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F73a1dac6-6d24-42b7-bf1d-03910e18d4f8%2Fb2f12542-6b5c-428d-86a5-cd47644d4f08%2Fbrrf1jg_processed.png&w=3840&q=75)
Transcribed Image Text:Living chain polymerization of monomer X follows the first-order kinetics. The corresponding
propagation rate constant (kp) was determined by gas chromatography (GC), with the
following monomer concentrations measured at different polymerization times, assuming
instant initiation:
Polymerization time (min)
0
2
5
10
15
[X]t (M)
1.80
1.52
1.27
0.95
0.74
0.50
0.25
20
30
Plot the dependence of -In([X]/[X]) on time using software specialized for graphs (e.g.,
Origin, SigmaPlot, not MS Excell!) and perform the linear data fitting. Export the graph in TIFF
format and paste it below as an image. Make sure the graph is graphically appealing!
b) From this fitting, calculate the kp of polymerization, assuming the living character of
polymerization and an initial initiator concentration (an thus the constant concentration of
growing centers) of 0.09 M
c) What is the theoretical degree of polymerization (DP) of the prepared polymer? We
assume full monomer conversion, complete initiation, absence of termination and any chain
transfers.
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