User:Karlena L. Brown/Notebook/PVOH Research/2013/02/20: Difference between revisions
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* Originally the type of oil used to prepare microspheres previously was mineral oil; however, safflower oil was used this time as substitute | * Originally the type of oil used to prepare microspheres previously was mineral oil; however, safflower oil was used this time as substitute | ||
* Safflower oil has a higher freezing point than mineral oil | * Safflower oil has a higher freezing point than mineral oil | ||
* | * Once samples placed in 10mL vials after being removed from blender began to settle, each sample was then sonicated before freezing in liquid nitrogen -- keeping microspheres immersed in organic layer | ||
* For the 90:10 PVOH 146K 110% CEC Laponite w/ DMHXLBR, 45mL vs. 35mL of safflower oil was used | * For the 90:10 PVOH 146K 110% CEC Laponite w/ DMHXLBR, 45mL vs. 35mL of safflower oil was used | ||
* Rhodamine 6G dye maintains high affinity for organics; therefore, Rhodamine 6G dye will be added later to each microsphere newly prepared | * Rhodamine 6G dye maintains high affinity for organics; therefore, Rhodamine 6G dye will be added later to each microsphere newly prepared |
Revision as of 22:43, 25 February 2013
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OBJECTIVES
Expanded Method of PVOH Clay Microsphere Preparation
Important Liquid Nitrogen Safety
PVOH 146K Prepared Microsphere Samples & Dye Preparations 21μM Rhodamine 6G Dye Concentration (90:10) M1V1 = M2V2 1μM (RG6)x 10mL = (92μM)V2 V2 = 109μL 1μM Rhodamine 6G Dye Concentration (50:50) M1V1 = M2V2 1μM (RG6)x 10mL = (165μM)V2 V2 = 61μL
Hydrogel Pressure Testing Protocol
Hydrogel Pressure Samples Tested
Notes
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