It's the third lecture notes of essential coarse Material Science for both Master and Bachelor students and it deals with the Polymers, its structure, properties and different kinds.
The main book for this course is "Material Science and Engineering: An Introduction" by William D. Callister, Jr., ...
Characteristics, Applications & Processing of Polymers
Applications and Processing of Ceramics
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Abdul Wali Khan University Mardan
Material Science
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Polymer Structures
Callister Chapter 14
TEM image showing spherulite
structure in a natural polymer
Lecture 3
Instructor: Dr. Majid Khan
Chapter 14 - 1
, Chapter 14:
Polymer Structures
ISSUES TO ADDRESS...
• What are the general structural and chemical
characteristics of polymer molecules?
• What are some of the common polymeric
materials, and how do they differ chemically?
• How is the crystalline state in polymers different
from that in metals and ceramics ?
Chapter 14 - 2
, What is a Polymer?
Poly mer
many repeat unit
repeat repeat repeat
unit unit unit
H H H H H H H H H H H H H H H H H H
C C C C C C C C C C C C C C C C C C
H H H H H H H Cl H Cl H Cl H CH3 H CH3 H CH3
Polyethylene (PE) Poly(vinyl chloride) (PVC) Polypropylene (PP)
Adapted from Fig. 14.2, Callister & Rethwisch 8e.
Chapter 14 - 3
, Ancient Polymers
• Originally natural polymers were used
– Wood – Rubber
– Cotton – Wool
– Leather – Silk
• Oldest known uses
– Rubber balls used by Incas
– Noah used pitch (a natural polymer)
for the ark
Chapter 14 - 4
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