High Performance Polymers, 2nd Edition

15: POLY(IMIDE)S 357

O

O

OO

O

O

HO OH

CF

3

F

3

C

N

O

OO

O

N

ONH

2

H

2

N

HO OH

CF

3

F

3

C

NH

2

H

2

N

O

N

O

OO

O

N

CF

3

F

3

C

N

O

N

O

Figure 15.8 Synthesis of poly(benzoxazole-

co

-imide)

membranes [106].

PI with an organically modified Montmorillonite

nanocomposite was tested as membrane for alkaline

fuel cells [108]. In comparison to pure PI, the addition

of organically modified Montmorillonite improves

the thermal stability and increases the capability of

absorption of electrolyte and increases the ionic con-

ductivity of the composite.

Also a modification of PI by chloromethylation,

quaternization, and alkalization improves the proper-

ties of alkaline anion exchange membranes [109].

15.5.4 Sensor Technology ...