Abstract
Composite systems containing electroconducting polymer coatings (polyaniline and polypyrrole) applied to porous films of semicrystalline polymers (polyethylene, polypropylene, and polyvinylidene fluoride) have been prepared. Porous supports were obtained in the process based on polymer melt extrusion with subsequent annealing, uniaxial extensions, and thermal stabilization. Conducting coatings were formed by the oxidative polymerization of the monomers directly onto the porous supports. The structure (overall porosity, permeability, pore sizes, factor of orientation) and morphology (specific surface and character of the film surface) of the supports were characterized by sorptometry, filtration porosimetry, atomic force microscopy (AFM), and X-ray scattering techniques. It was observed that the porous supports have a strongly developed relief surface which is formed in the pore formation process. It was proven by scanning electron microscopy (SEM) that the porous supports have an oriented structure, and the surface of the composites is defined by the morphology inherent in the conducting component. It was shown that these composites (porous support/conducting coating) demonstrate electric conductivity both along the surface and between surfaces. It was demonstrated that the deposition of conducting coatings leads to an increase in the water wettability of the composites compared with pronounced hydrophobic supports. The composites are characterized by good adhesion between components due to a relief film surface as well as high mechanical strength and elasticity provided by the oriented character of the supports.
Highlights
IntroductionConducting polymers represent one of the most attractive substances for the elaboration of smart materials in numerous potential applications
Published: 2 January 2022Intrinsically conducting polymers represent one of the most attractive substances for the elaboration of smart materials in numerous potential applications
The goal of this work was to prepare the porous supports of PE, PP, and polyvinylidene fluoride (PVDF) and composites, containing the conductive polymer coatings (PANI and PPy) applied to these supports, to investigate the structure development of the samples in the process of formation and to characterize the functional properties of the composites
Summary
Conducting polymers represent one of the most attractive substances for the elaboration of smart materials in numerous potential applications. Due to their unique electrical, optical, and electrooptical properties, they may be used in batteries, electrochromic displays, ion-exchange materials, membranes, sensors, corrosion protection coatings, antistatic and biomaterials, etc. A distinctive feature of the conducting polymers which distinguishes them from classical conductors consists in the possibility to prepare various configurations via a modification with various dopants or combination with desired supports in the hybrid systems. The changes of characteristics of these polymers as a result of chemical or electrochemical doping permit to use them for obtaining composite systems with a wide spectrum of functional properties [7,8,9].
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