Introduction to Bead Synthesis
- It has been mentioned that the synthesis of polymer beads is probable. The following procedures were performed through trial and error.
- 0.0550 g of sodium montmorillonite and 0.5000 g of PVA was added to 6 mL of 10% HCl with heat at approximately 80°C.
- Others dissolved their NaMT and PVA in 7 mL; I thought that minimizing the volume of HCl is best since the addition of heat is sufficient to dissolve the solids. I chose the volume of 6 mL by observing that this amount is not saturated with the solids portion of the mixture.
- 1 M HCl (10% HCl) was diluted from 12 M HCl into water by Dr. Hartings.
- The mixture was allowed to stir until dissolved.
- Once the mixture was dissolved, a pasteur pipette was used to make add droplets into solutions.
- James and I performed the procedure while Jake observed and recorded the trials performed.
- PVA-Clay was not strong enough to hold a sphere but rather made string/fibers. This can be weaved into a sort of bead but this cannot be measured
- James suggested that an organic phase such as hexane should enable the formation of beads.
Hexane Trial #1
- HCl is immiscible in Hexane, spherical constitution of beads was overall maintained. Upon adding to Glutaraldehyde, the beads did not stay together.
- Used 250μL Gluteraldehyde in 10mL Hexane
Hexane Trial #2
- This time the Glutaraldehyde was rapidly stirred and the PVA-Clay solution was slowly dropped in. Bead formation was observed while stirring, however the beads were not given enough time to finish cross linking and stuck together.
- Used 100μL Glutaraldehyde in 10mL Hexane
Hexane Trial #3
- Bigger container and more time in between drops in order to allow more time to cross linking.
- 200μL Glutaraldehyde in 150mL Hexane
Hexane Trial #4
- Using a blender this time in attempt to make an emulsion.