Testing of drying process model for acoustically levitated disaccharide aqueous solutions

Autori

  • Antonio Cannuli Università degli Studi di Messina Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra Viale F.S. D’Alcontres 31, 98166 Messina
  • Maria Teresa Caccamo Università degli Studi di Messina Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra Viale F.S. D’Alcontres 31, 98166 Messina

DOI:

https://doi.org/10.1478/AAPP.97S2A22

Parole chiave:

Drying Processes, Acoustic Levitation, Infrared Spectroscopy, Disaccharides, Trehalose, Sucrose, Aqueous Solutions, Surface Tension

Abstract

The paper reports experimental results collected for testing a drying process model for acoustically levitated droplets. More specifically, the so-called D2 versus time law is tested on droplets of homologous disaccharide aqueous solutions. For assessing the validity of the model, the determination of the droplet diameter is performed by a direct video camera monitoring and by an OH/CH area ratio analysis of InfraRed spectra collected as a function of time. For such a test, aqueous solutions of trehalose and sucrose, which show different surface tension values, are investigated. The experimental findings, obtained by the two independent employed approaches, reveal, for both the samples, a good agreement with the theoretic model previsions for the initial time trend. Furthermore, in agreement with literature data, they furnish a value of the surface tension, which is higher for trehalose in respect to sucrose.

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Pubblicato

2019-12-20

Fascicolo

Vol 97, SUPPL NO 2 (2019): NACS 2017

Sezione

NACS 2017 (Conference Proceedings)

Licenza

Creative Commons License
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