University of Minnesota
Department of Chemical Engineering and Materials Science
MatS 3011: introduction to Materials Science and Engineering
Fall Semester 2009
Two hours Final Exam (December 23, 2009)
Name S o\ scum)
You have 120 minutes. Please work alo
Chem/ChEn/MatS 4214
Spring, 2016
Homework Set #3
Due in class, Friday, February 19
1 (3 points). A free radical polymerization is initiated by benzoyl peroxide (C14H10O4) at T = 60
C. The concentration of monomer and initiator at t = 0 are [M]0 = 2 mol/l
Quiz (Lecture 10):
In a living polymerization, What’s the polydispersity of
the resulting polymer, when the kinetic chain length 17 =
500?
d) 1.502
e) None of the above ’0“! Wm WM
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Quiz (Lecture 09):
For a chain-growth polymerization, if the kinetic chain
length 17 = 3000, What the number average degree of
polymerization Nn = ? Assume the reaction happens at
high temperature, so that it is equally probable to have
disproportionation
Quiz, Lecture 12
In the case of a polymerization conducted near equilibrium
conditions, the maximum temperature above which
polymerization cannot proceed spontaneously is called:
(A) The roof temperature
(B) The basement temperature
(C) The attic temperat
Quiz (Lecture 11):
For anionic polymerization in a non-polar solvent, the rate
of propagation is given by
Rp = kapp
What’s n in the formula?
a) The number of repeat units in polymer
b) The number of anionic sites, created by the initiation
of a single in
Chem/ChEn/MatS 4214
Spring, 2016
Homework Set #1
Due in class, Friday, February 5
1 (3 points). The Gophers starting offense for the first game of the 2013 football season was (last name,
official weight): Lenkiewicz: 289, Epping: 321, Christenson: 306, B
1
2
3
4
5
6
Total
University of Minnesota
Department of Chemical Engineering and Materials Science
MatS 3011: Introduction to Materials Science and Engineering
Spring Semester 2013
Exam #3 (April 24, 2013)
Name _Section _ Time _
You have 50 minutes. This
Chinese Joumal of Polymer Science Vol. I 7, No.2. (1999), 135-140 Chinese J0 "13, of
Polymer Science
@1999 Springer-Verlag
MEASUREMENT OF NUMBER AVERAGE MOLECULAR WEIGHT OF
STYRENE OLIGOMER BY l3C-NMR METHOD*
Song Wang, Xiao-hu Yan and Rong—shi Cheng"
Dep
