Investigations on some selected conducting polymers and polymer ...

1.11.2 Conducting polymers in microelectronics
I ntroduction
The electrical conductivity of the conducting polymers can be
suitably tuned by selecting proper dopants, varying the dopant
concentration and synthesis temperature and by preparing polymer
blends and composites. In addition, they offer light weight,
processibility and flexibility. Possible microelectronic applications
include manufacture of devices such as diodes and transistors,
metallization, electrostatic discharge protection, electromagnetic
shielding, corrosion protection of metals, interconnection technologies
and lithography. Recently it has been discovered that water soluble
polyanilines may be used as charge dissipators in Scanning Electron
Microscopy (SEM) [70].The use of conducting polymers in the future
for le fabrication and flat panel display manufacture is another exciting
area. But higher mobilities and long term stability are required from the
semiconducting conjugated polymers before they can compete with
silicon based devices.
1.11.3 Gas and liquid separation applications of polyaniline
memebranes
Membrane based purification systems have wide range of
applications such as separating oxygen and nitrogen from atr,
desalinating sea water, removing organics from waste streams, and
separating pure ethanol from its azeotropic mixture with water.
Polymer membrane purification systems have proved to be more
energy efficient than standard industrial purification techniques.The
distinct advantages of polymer membranes include their ease of
synthesis and processibility. Polymers can be easily cast as flexible thin