Callister - An introduction - 8th edition

14.4 The Chemistry of Polymer Molecules • 539
F
C
F
C
F
C
F
C
F
C
F
C
F
C
F
C
Figure 14.2 Repeat unit and chain structures
for (a) polytetrafluoroethylene, (b) poly(vinyl
chloride), and (c) polypropylene.
F
F
F
F
F
F
F
F
Repeat unit
(a)
H
H
H
H
H
H
H
H
C
C
C
C
C
C
C
C
H
Cl
H
Cl
H
Cl
H
Cl
Repeat unit
(b)
H
H
H
H
H
H
H
H
C
C
C
C
C
C
C
C
H
CH 3
H
CH 3
H
CH 3
H
CH 3
Repeat unit
(c)
VMSE
Table 14.3
Polymer
A Listing of Repeat Units for 10 of the More Common
Polymeric Materials
Repeat Unit
H
H
Polyethylene (PE)
C
C
Repeat Unit Structures
H
H
H
H
Poly(vinyl chloride) (PVC)
C
C
H
Cl
F
F
Polytetrafluoroethylene (PTFE)
C
C
F
F
H
H
Polypropylene (PP)
C
C
H
CH 3
H
H
Polystyrene (PS)
C
C
H
(Continued)