Autor según el artículo: Carrasco-Munoz A; Barbero-Colmenar E; Bodnár E; Grifoll J; Rosell-Llompart J
Departamento: Enginyeria Química
Autor/es de la URV: GRIFOLL TAVERNA, JORDI / Rosell Llompart, Joan
Palabras clave: Size distribution Ring electrodes Polymer nanoparticles Polymer microparticles Nanoparticles Ion sources Gas phase ions Extraction Electrosprays Electrospray Electrohydrodynamics Electrohydrodynamic atomization Electrodes Electrical charges Electrical charge Electric corona Drops Droplets Droplet to particle Curcumin Corona discharges Corona discharge Cone-jet mode spray polymer particles polymer nanoparticles polymer microparticles generation gas phase ions electrospray electrohydrodynamic atomization electrical charge dynamic atomization drug droplet to particle curcumin coupling electrospray corona discharge charge reduction
Resumen: We present a new approach for micro- and nanoparticle production by in-situ charge reduction of electrospray droplets, which prevents their Coulombic instabilities and allow the efficient transport (extraction) of the particles. A unipolar ion source based on corona discharge generates a controllable ion flux of opposite polarity to the electrospray. The ions are introduced axially into the spray, while the Taylor cone is screened from the ions by an extractor ring electrode. Efficient and steady droplet discharge and extraction through an orthogonal aerosol-extraction tube was attained when the inlet of the tube was near the spray emission and the ring electrode, resulting in dramatic changes in droplets’ trajectories. The best extraction conditions (highest filter collections) were associated with the best discharging (lowest residual electrical charge) and the most globular particles. The size distributions on the particles collected on the filters were monomodal and homogeneous, with small relative standard deviations (as small as 10.6%). The use of corona ions significantly expands the range of polymer concentrations over which globular particles with monomodal size distribution can be made by electrospray. © 2021 Elsevier Ltd
Áreas temáticas: Química Pollution Meteorology & atmospheric sciences Mechanical engineering Materials science (miscellaneous) General materials science Fluid flow and transfer processes Environmental sciences Environmental engineering Environmental chemistry Engineering, mechanical Engineering, chemical Atmospheric science
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: joan.rosell@urv.cat
Identificador del autor: 0000-0002-5288-9150
Fecha de alta del registro: 2024-07-20
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S0021850221006352
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Journal Of Aerosol Science. 160
Referencia de l'ítem segons les normes APA: Carrasco-Munoz A; Barbero-Colmenar E; Bodnár E; Grifoll J; Rosell-Llompart J (2022). Monodisperse droplets and particles by efficient neutralization of electrosprays. Journal Of Aerosol Science, 160(), -. DOI: 10.1016/j.jaerosci.2021.105909
DOI del artículo: 10.1016/j.jaerosci.2021.105909
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2022
Tipo de publicación: Journal Publications
Repositori URV