User:Eleni N. Kalivas/Notebook/CHEM-571/2015/02/13: Difference between revisions
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|style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> | |style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> PVA-Alg Bead Synthesis</span> | ||
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== | ==February 13, 2015== | ||
* | *Upscale syntheses of PVA-Alg-NaMT | ||
*Attempt regular synthesis with PVA-Alg-NaMT & AC to attempt to integrate AC into the nanocomposite structure | |||
===Procedure=== | |||
Procedure adapted from [http://onlinelibrary.wiley.com/doi/10.1002/bit.260390411/abstract | Kuo-Ying Amanda Wu and Keith D. Wisecarver (1992)]<br.> | |||
<br.> | |||
Upscaled PVA-Alg-NaMT<br.> | |||
# Prepare an aqueous solution of 13% PVA and 0.02% sodium alginate at 60°C (Stir plate on 3rd setting: ~68°C) | |||
#* '''4 g of PVA''' and '''0.64 g of sodium alginate''' in '''7 mL of water''' (12.5% PVA and ~0.02% alginate) | |||
##* Add alginate '''while stirring''' PVA-water solution | |||
#* '''~0.4 g NaMT''' should be added to this mixture where applicable | |||
# Cool dissolved and mixed solution to 35°C | |||
# Prepare 840 mL of saturated citric acid with 4% calcium chloride | |||
## Add '''33.6 g (4%) calcium chloride''' to 210 mL of water | |||
## Add citric acid to saturation ('''48 g citric acid''') | |||
##* 14.7g/100mL > 30.87 g/210 for solubility comparable to boric acid | |||
# 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 | |||
<br.> | |||
PVA-Alg-NaMT&AC | |||
# 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 citric acid to saturation ('''12-15 g citric acid''') | |||
##* 14.7g/100mL > 30.87 g/210 for solubility comparable to boric acid | |||
# 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 | |||
**PVA: 4.01 g | |||
**Alg: 0.65 g | |||
**NaMT: 0.4 g | |||
**Citric acid: 48.03 g | |||
**CaCl<sub>2</sub>: 33.6 g | |||
*PVA-Alg-NaMT&AC | |||
**PVA: 1.01 g | |||
**Alg: 0.16 g | |||
**NaMT: 0.1 g | |||
**AC: 0.05 g | |||
**Citric acid: 12.69 g | |||
**CaCl<sub>2</sub>: 8.34 g | |||
====Notes==== | |||
*Run normal-scale PVA-Alg-NaMT with no citric acid | |||
*Mass out upscaled product, solvent washing and FTIR, pXRD | |||
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Revision as of 06:22, 18 February 2015
 PVA-Alg Bead Synthesis
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February 13, 2015
ProcedureProcedure adapted from | Kuo-Ying Amanda Wu and Keith D. Wisecarver (1992)<br.> <br.> Upscaled PVA-Alg-NaMT<br.>
<br.> PVA-Alg-NaMT&AC
Measurements
Notes
| |
