Naslov: | Measurement of CO2 solubility and diffusivity in poly(L-lactide) and poly(D,L-lactide-co-glycolide) by magnetic suspension balance |
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Avtorji: | ID Markočič, Elena (Avtor) ID Škerget, Mojca (Avtor) ID Knez, Željko (Avtor) |
Datoteke: | http://dx.doi.org/10.1016/j.supflu.2008.07.011
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Jezik: | Angleški jezik |
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Vrsta gradiva: | Neznano |
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Tipologija: | 1.01 - Izvirni znanstveni članek |
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Organizacija: | FKKT - Fakulteta za kemijo in kemijsko tehnologijo
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Opis: | The solubility of supercritical carbon dioxide (scCO2) in poly(l-lactide) and poly(d,l-lactide-co-glycolide) at different temperatures (308, 313 and 323 K) and pressures (10-30 MPa) was measured using a magnetic suspension balance. The solubility data were also used for estimating the binary diffusion coefficients. The results show a good solubility of CO2 in both polymers: up to 43% in poly(l-lactide) and 30% in poly(d,l-lactide-co-glycolide). The diffusion coefficients have high values, which verify the liquid-like solvating properties of scCO2. The diffusion coefficient depends on the quantity of gas already absorbed by the polymer; its values decrease with increasing gas concentration. |
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Ključne besede: | SC CO2, solubility, diffusivity, magnetic suspension balance |
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Leto izida: | 2008 |
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PID: | 20.500.12556/DKUM-26284  |
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UDK: | 66-987 |
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COBISS.SI-ID: | 12682262  |
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ISSN pri članku: | 0896-8446 |
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NUK URN: | URN:SI:UM:DK:GBQ81QFM |
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Datum objave v DKUM: | 31.05.2012 |
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Število ogledov: | 1638 |
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Število prenosov: | 102 |
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Metapodatki: |  |
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Področja: | Ostalo
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