1,721,179 research outputs found
PECVD of SiOxNyCzHw thin films from hexamethyl-disilazane containing feed. Investigation on chemical characteristics and ageing behaviour
No full text
Contribution to global warming of plasma polymerization and treatment processes fed with fluorinated compounds
No full textAerosol-Assisted Atmospheric Pressure Cold Plasma Deposition of Organic–Inorganic Nanocomposite Coatings
Full text linkLow pressure plasma technologies have been widely and successfully utilized
for the production of a large variety of organic–inorganic nanocomposite (NC) thin films
consisting of metal or metal oxide nanoparticles embedded in a polymer matrix. Recently,
the deposition of this class of coatings has been also accomplished by atmospheric pressure
cold plasmas using aerosol-assisted processes in which a dispersion containing preformed
inorganic nanoparticles and the liquid precursor of the polymeric component is atomized
and injected in aerosol form in the atmospheric plasma. This short review is aimed at
presenting this approach which is expected to enlarge the range of structures and properties
of organic–inorganic NC coatings deposited by cold plasma technologies
Introduction of Basic Functionalities on the Surface of Granular Adsorbers by Low Pressure Plasma Processes
No full textLow pressure plasma, generated in a radio frequency reactor under rotation, was utilized to modify the ability of granular substrates to adsorb volatile acid compounds. Carbon black granules were treated with NH 3 or allylamine containing feeds, while sepiolite granules were processed only in allylamine fed discharges. The chemical modifications induced by plasma treatments were evaluated by means of X-ray photoelectron spectroscopy studies and water contact angle measurements, while scanning electron microscope and Brunauer, Emmet, Teller analyses were performed to study the surface morphological changes caused by plasma processes. The ability of the treated materials to adsorb acids, in gas or vapour phase, was estimated with hydrochloric, acetic and propanoic acid, employing a home-made test system. The results show that the optimized plasma treatments are able to improve the adsorption ability of carbon black and sepiolite granules for the three acids investigated. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- …
