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: charge reduction corona discharge coupling electrospray curcumin droplet to particle drug dynamic atomization electrical charge electrohydrodynamic atomization electrospray gas phase ions generation polymer microparticles polymer nanoparticles polymer particles spray Cone-jet mode Corona discharge Corona discharges Curcumin Droplet to particle Droplets Drops Electric corona Electrical charge Electrical charges Electrodes Electrohydrodynamic atomization Electrohydrodynamics Electrospray Electrosprays Extraction Gas phase ions Ion sources Nanoparticles Polymer microparticles Polymer nanoparticles Ring electrodes Size distribution
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: Atmospheric science Engineering, chemical Engineering, mechanical Environmental chemistry Environmental engineering Environmental sciences Fluid flow and transfer processes General materials science Materials science (miscellaneous) Mechanical engineering Meteorology & atmospheric sciences Pollution Química
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: 2023-02-19
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S0021850221006352
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
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
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