Optimization of physicochemical and dielectric features in the conductive copolymers of aniline and 2-aminophenol

The current exploration emphasizes improving the solubility and thermal characteristics of the homopolymers–polyaniline and poly-2-aminophenol via copolymerization technique with simultaneous optimization of conductivity and dielectric behavior. Poly (aniline-co-2-aminophenol) copolymers with varyin...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2019-11, Vol.76 (11), p.5603-5617
Main Authors: Waware, Umesh Somaji, Hamouda, A. M. S., Majumdar, Dipanwita
Format: Article
Language:English
Subjects:
Aminophenol
Aniline
Batteries
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Conducting polymers
Copolymerization
Copolymers
Dielectric properties
Dielectrics
Frequency variation
Grain size distribution
Hydrogen
Morphology
Optimization
Organic Chemistry
Original Paper
Particle size
Photovoltaic cells
Physical Chemistry
Polyanilines
Polymer Sciences
Polymerization
Polymers
Soft and Granular Matter
Solubility
Thermal stability
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Summary:The current exploration emphasizes improving the solubility and thermal characteristics of the homopolymers–polyaniline and poly-2-aminophenol via copolymerization technique with simultaneous optimization of conductivity and dielectric behavior. Poly (aniline-co-2-aminophenol) copolymers with varying monomers compositions have been synthesized using chemical oxidative copolymerization technique. The copolymers showed considerable improvement of solubility in organic solvent compared to the unsubstituted polyaniline. Morphology of these copolymers was characterized by powdered-XRD and FESEM measurements. The studies revealed improved crystallinity in the copolymers compared to poly-2-aminophenol homopolymer. All the copolymers possess porous network with different degrees of aggregated nanoparticles blended with nanoflake structures. The copolymers also exhibited appreciable thermal stability over the homopolymers inferred from DSC measurements. The variation of frequency-dependent conductivity and dielectric permittivity of these different copolymers were further investigated and correlated with grain size distribution and varying proportions of oligoaniline segments in the polymer backbone of poly-2-aminophenol.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-018-2668-4