Jezik: | Slovenski jezik |
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Leto izida: | 2015 |
Tipologija: | 2.11 - Diplomsko delo |
Organizacija: | UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo |
Založnik: | [E. Mamić] |
UDK: | 543.572/.573(043.2) |
COBISS: | 19124246 |
Št. ogledov: | 2005 |
Št. prenosov: | 185 |
Ocena: | 0 (0 glasov) |
Metapodatki: |
Sekundarni jezik: | Angleški jezik |
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Sekundarni naslov: | STUDYING PHYSICAL AND CHEMICAL PROPERTIES OF ACTIVE SUBSTANCES WITH THERMO ANALYSING TECHNIQUES |
Sekundarni povzetek: | We have studied thermal properties of paracetamol and polyethylene glycol (PEG) of different molecular masses and various mixtures of them by DSC and TGA analysis. We were observing changes in the PCM melting curve of simple physical mixtures according to the pure active substance. We prepared the mixtures in the agate mortar and then we melted the mixtures on a water bath. The mixtures were cooled down in air and then analysed with DSC. We compared the influence of two different techniques of mixture preparation on the shape of DSC curve. We have also studied the influence of heating rate on the DSC curves and the melting peaks of PEG. Measurements were made in an air atmosphere. We have found out that the interactions between the active ingredient and the PEG depend on the composition of the mixtures, the molecular weight of the PEG and the method of mixing. We have also observed the crystalline structure of PCM after the first and after the second heating of the mixtures. |
Sekundarne ključne besede: | thermal analysis;differential scanning calorimetry;DSC;thermogravimetric analysis;TGA;polyethylene glycol;PEG;paracetamol;PCM; |
URN: | URN:SI:UM: |
Vrsta dela (COBISS): | Diplomsko delo/naloga |
Komentar na gradivo: | Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo |
Strani: | VIII, 36 str. |
ID: | 8901649 |