Study of the effect of synthesis parameters in the electrical conductivity of the composite poly (vinylidene fluoride) / polyaniline

Abstract

Estudo do efeito dos parâmetros de síntese na condutividade elétrica do compósito fluoreto de polivinilideno / polianilinaStudy of the effect of synthesis parameters in the electrical conductivity of the composite poly (vinylidene fluoride) / polyaniline ABSTRACTThe electroactive polymers have been the subject of many studies in the last decade, mainly because its unique properties. They are used in composite structures, which allow its application in many fields, as for example, sensors and artificial muscles. The electrical properties of these composites are influenced by the doping state of the electroactive polymer, which is controlled during its synthesis process. Therefore, this work aimed to evaluate how the synthesis parameters influence the electrical conductivity of the composite PANI/PVDF.The synthesis parameters evaluated were the concentrations of monomer, initiator and dopant, and the synthesis time. PANI was obtained by chemical polymerization in a solution containing PVDF and the solvent DMF. To evaluate possible changes in the chemical structure of the composite, the samples were submitted to FT-IR and XRD analysis. It was possible to conclude that the parameters relative to the production of PANI directly influence in the electrical conductivity of the composite. So, the sample produced with major quantities of monomer, initiator and dopant were statistically significant to increase the electrical property of the composite.

Electrospun natural rubber fibers-based flexible conductive membranes

“…The produced mats present properties to be applied in different materials, including the sensors can be easily produced with this flexible mat. Then, the electrospun mat was coated with PAni, a polymereasily synthesized, chemically stable at room temperature conditions, high conductivity, and low cost [39]. To verify the presence of polyaniline in the conductive state (emeraldine salt), UV-Vis spectroscopy analysis was performed.…”

Passivation of Carbon Steel Using Intelligent Epoxy Paint

“…ICP polyaniline (PAni) has aroused significant interest in the scientific and technological environment for years due to the low cost characteristics of the monomer (aniline), the ease of synthesis, the excellent stability under certain environmental conditions in both non-conductive and conductive form, the ability to become electronic and ionic insulator in the oxidized state, representing desirable properties for the production of barrier effect in coatings and enabling the oxidation reactions capable of forming and/or preserving passivating oxides for various passivable metals, in addition to possessing properties that make it possible to obtain free-standing films [1,4,5].…”