Anionic Polysaccharides as Templates for the Synthesis of Conducting Polyaniline and as Structural Matrix for Conducting Biocomposites

Abstract

A green chemoenzymatic pathway for the synthesis of conducting polyaniline (PANI) composites is presented. Laccase-catalyzed polymerization in combination with anionic polysaccharides is used to produce polysaccharide/PANI composites, which can be processed into flexible films or coated onto cellulose surfaces. Different polysaccharide templates are assessed, including κ-carrageenan, native spruce O-acetyl galactoglucomannan (GGM), and TEMPO-oxidized cellulose and GGM. The resulted conducting biocomposites derived from natural materials provide a broad range of potential applications, such as in biosensors, electronic devices, and tissue engineering.

Preparation of a P(FcA-co-ANI)/graphene composite for application in supercapacitors

“…The peaks at 1129 and 1018 cm À1 were asymmetric. The peak at 1129 cm À1 was stronger than the corresponding peak in the spectrum of FcA, owing to the N¼Q¼N vibration 27 and perchlorate anion incorporation in copolymer 28 (where Q is the quinoid ring).…”

CHAPTER 7. Interfaces in Composite Materials

“…Other future potential applications of composites includes oral (e.g., polylactide-co-glycolide-bioactive glass composite 34 ) and ophthalmic implants (e.g., silicon polycaprolactone composites 35 ). Moreover, composites may be used as wound dressing (e.g., silk fibroin-hydroxyapatite composites 36 ) and biosensors/electronic devices (e.g., polysaccharide-polyaniline composites 37 ). Furthermore, composites can be used as delivery vehicles for drugs (e.g., polycarbonate-silica xerogel nano-composites for the release of rifampicine 38 ), proteins (e.g., poly(ethylene glycol) fumarate and gelatin microparticles for the release of bone morphogenetic protein-2 39 ) or cells.…”

Microfibers from interpolymer complexation of κ-carrageenan and oligomers of polyaniline for glucose detection

“…In another complex of PEGylated curdlan and cationic polythiophene, the supramolecular complexation occurs between the strand of polysaccharide and the chiral conductive polymers [17]. In our work, the PANI is template polymerized in the presence of polyanion, growing in the vicinity of sulfonic acid groups, resulting in a product of non-stoichiometric interpolyelectrolyte complex or interpolymer complex [18]. So in this article the term of complex or complexation is used to describe the in situ polymerized product of PANI and carrageenan (noted as complex of PANI-Carr).…”