User:Moira M. Esson/Notebook/CHEM-581/2013/03/22: Difference between revisions
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==Preparation of Microspheres== | ==Preparation of Microspheres== | ||
*The general protocol for microsphere preparation described on [[User:Moira_M._Esson/Notebook/CHEM-581/2013/02/20|2013/02/20]] and [[User:Moira_M._Esson/Notebook/CHEM-581/2013/02/22|2013/02/22]]. | |||
*The following preparations were run on a 0.05g scale as opposed to a 0.1g scale in case the 0.1g scale forms hydrogels. A comparison of the microspheres prepared on a different gram scale will be made. | |||
*A very small amount of PVA/clay was added to each vial and the vial was filled with safflower oil prior to the rapid freezing in order to achieve a true emulsion of microspheres in the organic safflower oil. This may prevent the formation of hydrogels. | |||
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{| {{table}} | |||
| align="center" style="background:#f0f0f0;"|'''PVOH vs. Clay Ratio''' | |||
| align="center" style="background:#f0f0f0;"|'''Clay Selection''' | |||
| align="center" style="background:#f0f0f0;"|'''PVOH 146K Mass (g)''' | |||
| align="center" style="background:#f0f0f0;"|'''Actual Clay Mass (g)''' | |||
| align="center" style="background:#f0f0f0;"|'''H<sub>2</sub>O Added (mL)''' | |||
| align="center" style="background:#f0f0f0;"|'''Safflower oil added (mL)''' | |||
|- | |||
| 50:50||NaMT||0.02530||0.02530||20||35 | |||
|- | |||
| 50:50||Laponite||0.02590||0.02500||20||35 | |||
|- | |||
| 90:10||NaMT||0.04140||0.01110||20||35 | |||
|- | |||
| 90:10||Laponite||0.04470||0.01100||20||35 | |||
|- | |||
| 50:50||110% CEC Laponite||0.02550||0.02500||20||35 | |||
|- | |||
| 90:10||110% CEC Laponite||0.04230||0.01150||20||35 | |||
|- | |||
| 50:50||50% CEC NaMT||0.02540||0.02500||20||35 | |||
|- | |||
| 90:10||50% CEC NaMT||0.04010||0.01050||20||35 | |||
|} | |||
<br> | |||
==Notes== | |||
*Microspheres prepared with PVA 130,000 and PVA 146,000-186,000 will be prepared. | |||
*Microspheres prepared on [[User:Moira_M._Esson/Notebook/CHEM-581/2013/03/20|2013/03/20]] seem to have formed small spheres and are easier to vortex as opposed to the previously prepared microsphere samples. | |||
Revision as of 17:46, 30 March 2013
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Objectives
Diffusion Testing
Preparation of Microspheres
Notes
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