Effect of oxidants and anionic surfactants on the morphology and permittivity of polypyrrole and its blends with epoxy resin
Abstract In this work, conductive polymers were prepared based on polypyrrole (PPy) and its blends with epoxy resin. The chemical syntheses of PPy used two oxidants (Fe2(SO4)3 and FeCl3.6H2O) and two surfactants (DBSNa and DBSA). PPy samples and their blends were characterized by scanning electron microscopy, electrical conductivity by four points, and measurements of complex parameters of electric permittivity (ε) and magnetic permeability, in the frequency range of 8.2 to 12.4 GHz. The micrographs of the fractured surfaces show that the PPy synthetized in the presence of surfactants has particles with smaller diameters, and the oxidant sulfate favored the formation of elongated structures, called fillets. The analysis of the blends found a homogeneous distribution of PPy clusters in epoxy resin matrix, which did not favor the electrical conductivity of these materials. On the other hand, the measurements of the complex parameters of the permittivity show that the blends have increasing values when the PPy concentration is increased in the epoxy resin.
Main Authors: | Campos,Regiane Aparecida Medeiros, Silva,Valdirene Aparecida da, Faez,Roselena, Rezende,Mirabel Cerqueira |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Associação Brasileira de Polímeros
2016
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282016000300197 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Effect of the Morphology and Structure on the Microwave Absorbing Properties of Multiwalled Carbon Nanotube Filled Epoxy Resin Nanocomposites
by: Silva,Valdirene Aparecida da, et al.
Published: (2018) -
The effect of cationic, anionic and nonionic surfactants on morphology and antibacterial properties of zinc oxide
by: Bazari,Mobina, et al.
Published: (2022) -
Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials
by: Silva,Valdirene Aparecida, et al.
Published: (2013) -
Síntese do polipirrol com surfactantes aniônicos visando aplicações como absorvedores de micro-ondas
by: Campos,Regiane Aparecida Medeiros, et al.
Published: (2014) -
Influence of aromatic amine hardeners in the cure kinetics of an epoxy resin used in advanced composites
by: Costa,Michelle Leali, et al.
Published: (2005)