February 18, 2015
- Run normal-scale PVA-Alg-NaMT with no citric acid
- Mass out upscaled product, solvent washing and FTIR, pXRD
Procedure
Procedure adapted from | Kuo-Ying Amanda Wu and Keith D. Wisecarver (1992)<br.>
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PVA-Alg-NaMT (no citric acid)
- Prepare an aqueous solution of 13% PVA and 0.02% sodium alginate at 60°C (Stir plate on 3rd setting: ~68°C)
- 1 g of PVA and 0.16 g of sodium alginate in 7 mL of water (12.5% PVA and ~0.02% alginate)
- Add alginate while stirring PVA-water solution
- ~0.1 g of NaMT and ~0.05 g AC should be added to this mixture where applicable
- Cool dissolved and mixed solution to 35°C
- Prepare 210 mL of saturated citric acid with 4% calcium chloride
- Add 8.4 g (4%) calcium chloride to 210 mL of water
- Add the PVA-Alg-Nanocomposite mixture drop-wise (by syringe) to the gently stirring (stir plate 3) citric acid-calcium chloride solution using a Pasteur pipette
- Stir for 2 hrs to allow solidification
- Rinse with water to remove excess reactants
Measurements
- PVA-Alg-NaMT (no citric acid)
- PVA: 0.99 g
- Alg: 0.16 g
- NaMT: 0.1 g
- CaCl2: 8.5 g
Notes
- Try one (maybe with halocite beads):
- Surfactant (and also buffer) > pH??
- Add sugar (sorbitol or manitol)
- Start with ammonium based (choline chloride)
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