User:Moira M. Esson/Notebook/CHEM-581/2013/02/06: Difference between revisions
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==Hydrogel Preparation== | ==Hydrogel Preparation== | ||
* The | * The six hydrogels prepared on [[User:Moira_M._Esson/CHEM-581/2013/01/30|2013/01/30]] were removed from the freezer. Approximately 4mL distilled H<sub>2</sub>O was added to each beaker. If the hydrogel was sticking to the side of the beaker, a spatula was used to scrape the hydrogel off the edges. The beakers were parafilmed and stored. These films will remain submersed in H<sub>2</sub>O for 3 days. This will remove any access DMSO. | ||
* | |||
'''Observations''': | |||
*After three days of the freeze-thaw method, the 6 prepared hydrogels have a firmer consistency than when prepared. | |||
*Each hydrogel shrank in size(were significantly smaller than when originally prepared. The height of the hydrogel grew, but the diameter decreased). | |||
*Although the films became firmer than when originally prepared, they still have some pliability(tested by pulling with a set of tweezers) and hold their shape. | |||
*The hydrogels became more clear in their appearance, so the distribution of the clay is very evident. | |||
*Using tweezers, it seems that the hydrogels with NaMT are the most rigid. This observation will be tested when performing tensile strength tests. | |||
*Each of the six films had a crystal clear film that grew along the edges of the beaker during the freeze thaw method. | |||
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Revision as of 11:52, 7 February 2013
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Objectives
PVA MicrospheresGeneral Protocol:
Hydrogel Preparation
Clay Filtration |