caa a22 4500 606169261 CHVBK 20210128100711.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10098-015-1030-x doi (NATIONALLICENCE)springer-10.1007/s10098-015-1030-x Nano layer encapsulation using circulating supercritical fluid fluidized bed [Elektronische Daten] [Aydin Sunol, Raquel Carvallo, Brandon Smeltzer] A new and novel green process that allows nano layer by nano layer deposition in a fluidized bed through the use of circulating supercritical carbon dioxide doped with encapsulating material is developed. A minor temperature perturbation that tunes the solubility power of the coating material in the fluidizing carbon dioxide allows nucleation and encapsulation without conventional solvent-based atomization approaches. Therefore, a cleaner alternative to the use of organic solvents in micro encapsulating is achieved. The approach is particularly attractive for instances that necessitate moisture-free environment. The use of supercritical fluids intensify the fluidization and deposition rate reducing the processing time while increasing controllability. The technology developed by the group is applied for the microencapsulation of energetic particles such as ammonium nitrate, photo-catalyst such as titanium dioxide, and for targeted delivery of medically active compounds. The layer thicknesses achieved range from 5 to 50nm while surface roughness of the products are within few nanometers. The presented applications illustrate unique properties achieved through the approach. Springer-Verlag Berlin Heidelberg, 2015 Encapsulation nationallicence Nano layer deposition nationallicence Supercritical fluids nationallicence Green engineering and chemistry nationallicence Fluidized beds nationallicence Sunol Aydin Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA aut Carvallo Raquel Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA aut Smeltzer Brandon Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/7(2015-10-01), 1831-1836 1618-954X 17:7<1831 2015 17 10098 https://doi.org/10.1007/s10098-015-1030-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-015-1030-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sunol Aydin Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA aut NATIONALLICENCE 700 1- Carvallo Raquel Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA aut NATIONALLICENCE 700 1- Smeltzer Brandon Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/7(2015-10-01), 1831-1836 1618-954X 17:7<1831 2015 17 10098