User:Moira M. Esson/Notebook/CHEM-581/2013/04/17: Difference between revisions
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==Microspheres== | ==Microspheres== | ||
'''Diffusion Testing''': | '''Diffusion Testing''': | ||
*The general protocol for diffusion testing described on [[User:Moira_M._Esson/Notebook/CHEM-581/2013/ | * The general protocol for diffusion testing described on [[User:Moira_M._Esson/Notebook/CHEM-581/2013/04/03|2013/04/03]] was followed. | ||
* Prior to diffusion testing, the samples were sonicated. | |||
**All diffusion spectra will be uploaded when analyzed. | |||
*It appears that diffusion of dye occurs much more rapidly for the prepared microspheres(true microspheres in comparison to the samples run with PVA146). This may be due to the smaller surface area of the microspheres in comparison to the hydrogels. This may serve as an advantage, as less sheer pressure may be needed to facilitate the release of dye. | |||
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'''Pressure Testing''': | |||
*Due to the small size of the prepared microspheres, it was determined that an unmodified pipette would not be used for pressure testing. The small size allowed the microspheres to go straight through an unmodified pipette. | |||
* Due to the small size, a new version of a modified pipette will be used during the next lab session. 5 of these modified pipettes were prepared. | |||
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Figure 1. Microsphere Modified Pipette to be used for Pressure Testing | |||
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[[Image:Microsphere modified pipette.jpg]] | |||
Revision as of 08:09, 19 April 2013
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Objectives
X-ray
MicrospheresDiffusion Testing:
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