User:Karlena L. Brown/Notebook/PVOH Research/2013/03/08: Difference between revisions
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==Notes== | ==Notes== | ||
* Many microsphere samples did not exactly precipitate out into smaller tiny spheres, they remained connected. | * Many microsphere samples did not exactly precipitate out into smaller tiny spheres, they remained connected. | ||
* Also many microspheres samples appeared to be very absorbent and squishy | * Also many microspheres samples appeared to be very absorbent and squishy to touch | ||
* Due to the excess amount of oil used to produce each microsphere sample, several portions and layers of oil had to be decanted off prior to rinsing extensively with hexanes -- samples were decanted by pulling off the oil using Pasteur pipettes | |||
* For many microspheres several portions of hexanes were needed to purify, clean, and remove oil from each sample ~ 25mL (5 portions of 5mL) | * For many microspheres several portions of hexanes were needed to purify, clean, and remove oil from each sample ~ 25mL (5 portions of 5mL) | ||
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Revision as of 17:49, 8 April 2013
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OBJECTIVES
Microspheres: Separation & Vacuum Filtration ProceduresSetup of a vacuum filtration system: * Clean 250mL Erlenmeyer Filter Flask * Large Buchner Funnel * Whatman #42 Filter Paper * Long Secure Rubber Hose
Notes
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