Solution and dope preparation

Solution/dope preparation by magnetic stirring

Solution/dope preparation by mechanical stirring

Solution/dope preparation by Ultrasound bath

Solution and dope stability study 

Qualitative inspection

Quantitative inspection by spectrophotometric testing. Preliminary investigation of NIPS process by analysis of coagulation bath to determine eventual releasing during the polymer precipitation and membrane formation

Polymer screening : support to design polymers  in membrane application

1. Moisture content, MW, TGA, DSC
2. Polymer solubility in common membrane manufacturing solvents (NMP, DMAc and DMF) and in green  solvent (DMC, DMI, Polar Clean)
3. Water as non solvent
4. Dissolution time
5. Polymer leaching
6. Polymer-Polymer compatibility
7. Polymer-Additive compatibility
8. Long term solution stability
9. Hydrophilicity assessment (ie: CAB, Ternary phase diagram)