
136 HIGH PERFORMANCE POLYMERS
(1,4-phenylene sulfide-1,4-phenyleneamine) (PPSA),
have been synthesized. The reaction is sketched in
Figure 5.6.
PPSA can also be obtained by the condensation
of methyl-(4-anilino-phenyl) sulfide with antimony
pentachloride [52]. The reaction proceeds in chloro-
form at −68
◦
C. The process is shown in Figure 5.7.
After polymerization, a demethylation step follows as
shown in Figure 5.6.
Poly(aniline) (PANI) is an electric conducting poly-
mer and is used in organic semiconductor technology.
The copolymers are of interest, because they might
S
NH
S
+
NH
CH
3
CH
3
SO
3
-
NH
S
O
CH
3
+
CH
3
S
O
O
OH
N
Figure 5.6 Aromatic condensation of the methyl-
sulfinyl ...