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samenvatting scheidingsmethoden

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Dit is het tweede deel van de samenvatting

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March 17, 2025
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Samenvatting deel Vera
Pakking materialen: geometrie
Keuze stationaire fase

1) Impact sp
a. Uniformiteit flow= bandverbreding vermijden
b. Diameter deeltje:
i. pressure drop(afname van druk die optreedt wanneer een vloeistof of gas
door een chromatografiekolom stroomt. Deze drukval wordt veroorzaakt
door de weerstand van het verpakkingsmateriaal (de stationaire fase) en
de viscositeit van de mobiele fase.)
ii. bed porositeit=void space = volume mp die kan stromen door packing
iii. diffusiepas indien poreus
c. porositeit: opp beschikbaar voor scheiding
i. macroporositeit >50nm
ii. nanoporeus <50nm
2) debiet
3) condities

Van Deemter vgl:




A=2lamdadp lamba=pakkingsfactor (onregelmatigheden pakking)/ dp=korreldiameter

Dragers stationaire fase

1) niet-poreus: weinig actief opp
2) poreus: onregelmatig pad
a. analyse duurt langer
3) oppervlakkig poreus
a. verlies van volume in kolom
4) monolieten: void space = 3d structuur
a. niet uniform pad
b. 3d printen→raster
5) µ-pillar array
a. reproduceerbaar, weinig staal nodig

materiaal voor scheiding




1

, Oppervlakkig poreus

Voordelen omwille van

- monodispers=homogene packing
o core/shell
o opp ruwheid
- hogere peremeabiliteit
- dense core: geen diffusie door core
 reductie A,B en C
 reductie back pressure

synthese

Multi-stap 1-stap synthese
- Ströber methode Sphere on sphere
= nat chemische methode Druppel based macrofluïds
TEOS=tetramethylorthosilicaat - Emulsie: waterdruppels in
Dense uniforme deeltjes olie
- Polymerisatie in
Poreuze coating waterdruppels ~reactor
- Layer by layer




Arbeidsintensief door herhalen stappen
Veel afval van solvent en polymeer
Heel gecontroleerd
- Coacervation




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