In this work, supercritical CO2 assisted electrospray is used to produce micro- and nanoparticles of polyvinylpyrrolidone (PVP) loaded with rutin (RUT), testing a new kind of collection system. The adoption of a liquid collector allowed a more accurate capture of the electrosprayed PVP/RUT particles that were generally smaller than the ones collected using an aluminum foil, maintaining constant all of the other operating parameters. In particular, PVP/RUT particles mean diameter ranged from 290 +/- 115 nm for 3 % w/w PVP loaded with 3.5 % w/w RUT/PVP to 943 +/- 216 nm for 3 % w/w PVP loaded with 10 % w/w RUT/PVP. RUT dissolution rate increased up to 6 times and periodic dynamic light scattering analysis allowed the measurement of RUT nanoparticles formed inside the PVP microparticles, whose mean diameter was 140 +/- 14 nm.
Supercritical {CO}2 assisted electrospray of {PVP}-Rutin mixtures using a liquid collector
Mariangela GuastaferroPrimo
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2022-01-01
Abstract
In this work, supercritical CO2 assisted electrospray is used to produce micro- and nanoparticles of polyvinylpyrrolidone (PVP) loaded with rutin (RUT), testing a new kind of collection system. The adoption of a liquid collector allowed a more accurate capture of the electrosprayed PVP/RUT particles that were generally smaller than the ones collected using an aluminum foil, maintaining constant all of the other operating parameters. In particular, PVP/RUT particles mean diameter ranged from 290 +/- 115 nm for 3 % w/w PVP loaded with 3.5 % w/w RUT/PVP to 943 +/- 216 nm for 3 % w/w PVP loaded with 10 % w/w RUT/PVP. RUT dissolution rate increased up to 6 times and periodic dynamic light scattering analysis allowed the measurement of RUT nanoparticles formed inside the PVP microparticles, whose mean diameter was 140 +/- 14 nm.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
