MFGT 141 HW#1 Name:_______________________
1. Polymers can be classified in two broad groups. List the two groups and EXPLAIN the
definition of each. ______________________________
_________________________________________________________
_________________________________________________________
2. List whether the following polymer is made from condensation or Addition polymerization
(C or A)? PP ______, Nylon 6 ______, ABS ______,
PVC _____, HDPE _____, PS _____, ABS _____.
3. For a PP polymer with DP (degree of polymerization of 900), the number of carbon atoms is
___? If the polymer is saturated, the number of hydrogen atoms is ___?
4. Explain the two forms of polymerization methods are ______ and _______. And four
examples of each are: Method 1: ___________________________
Method 2: _____________________________________________
5. An example of the alternating structure(with the use of A & B & C) of a graft terpolymer is
______________________?
6. Given the following data, calculate the number average molecular weight, the weight average
molecular weight, Calculate the Degree of polymerization, DP if the polymer is PVC, and
lastly, discuss whether the polydispersity distribution is narrow or broad. Note: Narrow is if
Mw/Mn < 5.0, and Broad is if Mw/Mn > 5.0
Mn= __________________, Mw= _________________,
Degree of polymerization, DP = ____________, Polydispersity = __________
Example, PP Homework: PVC
Ni
Mi
NiMi
NiMi2
Ni
Mi
NiMi
NiMi2
1,000
1,000
1.00E+06
1.00E+09
1,000
100,000
2,000
4,000
8.00E+06
3.20E+10
3,000
200,000
4,000
8,000
3.20E+07
2.56E+11
4,000
700,000
7,000
3,000
2.10E+07
6.30E+10
8,000
300,000
10,000
1,000
1.00E+07
1.00E+10
9,000
100,000
24,000
17,000
72,000,000
3.62E+11
AMU=
44
Mn=
3.00E+03
AMU=
Mn=
Mw=
5.03E+03
Mw=
Poly Disp
PS =
1.68E+00
Poly Disp
PS =
DP=Mn/amu
6.82E+01
DP=Mn/amu
7. Write out the polymerization reaction for nylon 6,6. Is it condensation or addition?
_____________________________
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