Abstract
This work presents a study on the preparation of plasma-polymerized aniline (pPANI) nanofibers and nanoparticles by an intense plasma cloud type atmospheric pressure plasma jets (iPC-APPJ) device with a single bundle of three glass tubes. The nano size polymer was obtained at a sinusoidal wave with a peak value of 8 kV and a frequency of 26 kHz under ambient air. Discharge currents, photo-sensor amplifier, and optical emission spectrometer (OES) techniques were used to analyze the plasma produced from the iPC-APPJ device. Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), gas chromatography-mass spectrometry (GC-MS), and gel permeation chromatography (GPC) techniques were used to analyze the pPANI. FE-SEM and TEM results show that pPANI has nanofibers, nanoparticles morphology, and polycrystalline characteristics. The FT-IR and GC-MS analysis show the characteristic polyaniline peaks with evidence that some quinone and benzene rings are broken by the discharge energy. GPC results show that pPANI has high molecular weight (Mw), about 533 kDa with 1.9 polydispersity index (PDI). This study contributes to a better understanding on the novel growth process and synthesis of uniform polyaniline nanofibers and nanoparticles with high molecular weights using the simple atmospheric pressure plasma polymerization technique.
Highlights
Various nanomaterials, such as nanofibers, nanoparticles, nanowires, nanotubes, nanoribbons, etc., have attracted a great deal of attention due to their technological advances in broadening the scope of applications, for instance, optoelectronics, molecular electronics, and bionanotechnologies [1–3]
This study contributes to a better understanding on the novel growth process and synthesis of uniform polyaniline nanofibers and nanoparticles with high molecular weights using the simple atmospheric pressure plasma polymerization technique
This study aims at designing a new generation of plasma-polymerized aniline nanoparticles and nanofibers using a simple and new atmospheric pressure plasma polymerization technique with high plasma energy and ultrafast deposition process
Summary
Various nanomaterials, such as nanofibers, nanoparticles, nanowires, nanotubes, nanoribbons, etc., have attracted a great deal of attention due to their technological advances in broadening the scope of applications, for instance, optoelectronics, molecular electronics, and bionanotechnologies [1–3]. Polymerized nanoparticles and nanofibers can be prepared using various techniques, such as chemical synthesis, electrochemical method, electrospinning, ultrasonic irradiation, hard and soft templates, seeding polymerization, interfacial polymerization, and plasma polymerization [5–17]. Among these methods, plasma polymerization and aerosol-through-plasma (A-T-P) systems have versatile advantages, especially having “dry” process, for the deposition of plasma polymer films [3,18–21] and carbon based. Materials 2016, 9, 39 materials [22–33] with functional properties suitable for a wide range of applications, such as electronic and optical devices, protective coatings, and biomedical materials It is well-known that plasma polymers are highly cross-linked, pinhole-free, branched, insoluble, and adhere well to most substrates
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