CARRAHER'S POLYMER CHEMISTRY
10TH EDITION
Table of Contents
Chapter 1. Introduction to Polymers
Chapter 2. Polymer Structure (Morphology)
Chapter 3. Molecular Weight of Polymers
Chapter 4. Polycondensation Polymers (Step-Reaction Polymerization)
Chapter 5. Ionic Chain-Reaction and Complex Coordination Polymerization (Addition
Polymerization)
,Chapter 6. Free Chain Polymerization (Addition Polymerization)
Chapter 7. Copolymerization
Chapter 8. Composites and Fillers
Chapter 9. Naturally Occurring Polymers—Plants
Chapter 10. Naturally Occurring Polymers—Animals
Chapter 11. Organometallic and Inorganic–Organic Polymers
Chapter 12. Inorganic Polymers
Chapter 13. Testing and Spectrometric Characterization of Polymers
Chapter 14. Rheology and Physical Tests
Chapter 15. Additives
Chapter 16. Reactions on Polymers
Chapter 17. Synthesis of Reactants and Intermediates for Polymers
Chapter 18. Polymer Technology
Chapter 19. Selected Topics
TEST BANK ANSWERS
1. Definitions
Match the following:
Amorphous ____H
Atactic ____F
Backbone ___N_
Copolymer ___M_
Crystalline ____G
Crosslinks ____K
Degree of polymerization J ____
DSC (differential scanning calorimetry) ____S
Entropy of mixing ____P
Glass transition temperature E ____
Helix and pleated ____U
Hilderband’s equation ____O
Homopolymer ____L
Mark–Houwink equation ____ Q
Melting point or range _____ D
Mer ____B
Plasticizer A ____
Polymer or macromolecule ____I
Protein ____V
TGA or TG (thermal gravimetric analysis) T ____
Vinyl polymer ____C
Young’s modulus ____R
A. A compound that “solubilizes” only a portion of a polymer chain; added to give flexibility.
B. Repeat unit in a polymer chain.
C. Polymer derived from the polymerization of vinyl monomers.
,D. Temperature range or poliont where a polymer achieves full chain mobility.
E. Temperature range where only local, segmental mobility occurs; where only relatively small
portions of the polymer can move.
F. Polymer where there is a random arrangement of pendant groups on each side of the polymer
backbone.
G. Polymer portion with a highly ordered structure.
H. Polymer portion with a (highly) disorganized structure.
I. Molecule composed of many mers or repeat units; a very large molecule.
J. Number of units within a polymer.
K. Covalent or physical bonds between two or more linear polymer chains.
L. Polymer composed of only one repeat unit.
M. Polymer composed of more than one repeat unit; usually employed to describe a vinyl
polymer derived from two different vinyl molecules.
N. Principal chain in a polymer molecule.
O. Describes the forces holding a material together; CED; used to help predict solubility.
P. Major force that encourages (drives) solubility.
Q. Viscosity =KMa.
R. Stress–strain.
S. Measures energy (heat) changes typically as a function of temperature.
T. Measures weight changes typically as a function of temperature.
U. Most common shapes of polymers.
V. Natural “nylon”; composed of amino acid units.
2. For the following polymer chain, circle only a branch point; draw a dotted line abount the two
end-groups; and indicate by a two-headed line (<---->) the end-to-end distance.
H3 C
H3 C
H3 C
3. Underline only those that would be more likely to soften and melt if heated.
Uncrosslinked polyethylene or highly crosslinked rubber
4. Underline only those polymers where hydrogen bonding occurs within and/or between
polymer chains.
Nylon/protein Polyethylene Cellulose
, Polybutylene Polyester
5. A. What is the molecular weight of polyethylene, -(-CH2CH2-)-, which has a DP of 100?
100 units × 28 amu/unit = 2800
B. What is the DP of a polyethylene that has a molecular weight of 56,000 Da?
56,000 amu/28 amu/unit = 2000 units
6. Underline only those groups that are apt to add flexibility to a polymer chain.
-CH2- Amide-C--N- -CH2-O- 1,4-Phenylene
|| |
O H
7. A. An elastomer (rubber) is flexible above or below (underline only the correct answer) its
glass transition temperature.
B. Underline only those properties/conditions that (generally) describe an elastomer (rubber).
Well ordered Highly disoriented chains in unstretched form
Largely hydrocarbon Minimal interaction between chains
Originally a lot of elongation for a little strain
8. For polyethylene, as visualized below, underline the correct answer.
A. The polyethylene chain, below, which should have the lower glass transition temperature is a
or b.
B. The polyethylene that should be stronger is a or b.
C. The polyethylene that should be more porous and susceptible to ultraviolet degradation is a
or b.
D. The polyethylene that should be denser is a or b.