Abstract
This short review discusses recent research regarding conductive polymeric blends containing polyaniline (PANI). Conducting PANI was reviewed in view of their properties to be used as a conducting component in several polymer matrix composites. Conductive PANI blends shows promise since the discovery of conducting polymers itself. These composite materials have introduced practical applications in various fields, including electromagnetic shielding and microwave absorption, static electricity dissipation, conducting membrane materials, conductive paint coatings and sensor materials. Highlights were made on PANI containing composites of polyethylene, polyamides, rubbers and elastomers, including other conventional thermoplastics and thermosets. Their electrical properties (percolation threshold and resistivity), blends preparation, drawbacks and potential usage were discussed in detail.
Highlights
Polyaniline (PANI) is one of the most interesting conducting polymers due to its low cost, good processability, environmental stability, unique active conduction mechanism [1] and reversible control of conductivity both by charge-transfer doping and protonation [2]
Known methods to produce PANI containing composites may be essentially reduced to two distinct groups: (1) synthetic methods based on aniline polymerization in the presence of or inside a matrix polymer, and (2) blending methods to mix a previously prepared PANI with a matrix polymer
The compatibilizers interaction with low density polyethylene (LDPE) is facilitated by the presence of alkyl substituents while the polar part interacts through H bonding with PANI
Summary
Polyaniline (PANI) is one of the most interesting conducting polymers due to its low cost, good processability, environmental stability, unique active conduction mechanism [1] and reversible control of conductivity both by charge-transfer doping and protonation [2]. Efforts have shifted to their use as conducting polymer composites or blends with common polymers This trend has been driven by the need to replace traditional inorganic conducting fillers and to improve the processibility of conducting polymers, along with their mechanical properties and stability. These composite materials have introduced conducting polymers to practical applications in different fields, including electromagnetic shielding and microwave absorption [6], static electricity dissipation [7], heating elements (clothing, wall papers, etc.) [8], conducting membrane materials [9], paint coatings for anticorrosion protection [10], and sensor materials [11]. Emphasis was made on composites of PANI with conventional polymers
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