Zoran Mandžuka (Author), Željko Knez (Author)

Abstract

For controlling the degree of crystallinity and crystal form during particle formation using supercritical fluids, knowledge of pressure influence on solid-liquid-gas (S-L-G) equilibrium and solubility data of the system is crucial. S-L-G equilibrium data were determined in pressure range from 50 to 600 bar for systems monostearate/CO2 and tristearate/CO2 using a high-pressure view cell. Results showed a temperature minimum for both systems.The solubilities of CO2 in liquid glycerides were high: maximum solubilities, which were determined at temperatures 70 and 90 °C and pressure range from 50 to 450 bar, were from 50 to 90 mol%. Physical characteristics of micronized monostearate and tristearate samples were studied in detail after micronization and after 3 months of storage at 20 °C.

Keywords

kemijska procesna tehnika;visokotlačna tehnologija;superkritični fluidi;mikronizacija;drobni delci;PGSS;stopnja kristaliničnosti;chemical processing;high pressure technology;supercritical fluids;micronization;fine particles;Particles from Gas Saturated Solution;degree of crystallinity;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
UDC: 66-987
COBISS: 12228886 Link will open in a new window
ISSN: 0896-8446
Views: 2435
Downloads: 41
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Other data

Secondary language: English
Secondary title: Influence of temperature and pressure during PGSSTM micronization and storage time on degree of crystallinity and crystal forms of monostearate and tristearate
Secondary keywords: kemijska procesna tehnika;visokotlačna tehnologija;superkritični fluidi;mikronizacija;drobni delci;PGSS;stopnja kristaliničnosti;
URN: URN:SI:UM:
Pages: Str. 102-111
Volume: ǂVol. ǂ45
Issue: ǂiss. ǂ1
Chronology: May 2008
DOI: 10.1016/j.supflu.2007.11.006
ID: 8717779