3. The thermal polymerization of B-carboxymethyl caprolactam proceeds by an initial isomerization via a second-order kinetic process followed by condensation of the isomer to the polymer: NH -NH2 Isomerization Polymerization но The data below were obtained at 270 °C for the polymerization of B-carboxymethyl caprolactam. t (min) c (mol fraction) 20 0.042
3. The thermal polymerization of B-carboxymethyl caprolactam proceeds by an initial isomerization via a second-order kinetic process followed by condensation of the isomer to the polymer: NH -NH2 Isomerization Polymerization но The data below were obtained at 270 °C for the polymerization of B-carboxymethyl caprolactam. t (min) c (mol fraction) 20 0.042
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:3. The thermal polymerization of B-carboxymethyl caprolactam proceeds by an initial
isomerization via a second-order kinetic process followed by condensation of the isomer
to the polymer:
-NH
-NH2
Isomerization
Polymerization
HO
The data below were obtained at 270 °C for the polymerization of B-carboxymethyl
caprolactam.
t (min)
c (mol fraction)
20
0.042
30
0.039
40
0.028
50
0.024
60
0.021
80
0.018
90
0.015
110
0.013
120
0.012
Given that the rates of polymerization are first order in vNH, and v(cO),0 and vNH, =
V(CO),0 -
(1) Using a graphical method, determine whether these data indicate catalyzed or
uncatalyzed conditions, and evaluate the rate constant for the polymerization.
(ii) Describe a method by which the values of c (mol fraction) might be determined.
(Where vNH, and v(co),0 are the number of NH2 and (CO),0 functional groups.)
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