Experimental investigation of operating conditions for preparation of PVA-PEG blend membranes using supercritical CO2

- Dense layer in PVA membrane was removed completely without addition of any additive.
- The part of the experimental procedure in which CO2 flows through the cell has been removed.
- Taguchi design and ANOVA (analysis of variance) were used to investigate the parameters.
- First report on preparation of PVA-PEG membrane by supercritical fluid technology.
- Effect of pressure, temperature and PEG concentration were studied on PVA membrane structure.