User:Elizabeth Ghias/Notebook/Experimental Chemistry/2013/02/25

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(Autocreate 2013/02/25 Entry for User:Elizabeth_Ghias/Notebook/Experimental_Chemistry)
Current revision (19:57, 26 February 2013) (view source)
 
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==Objective==
==Objective==
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Make PVOH hydrogels using isopropanol
==Description==
==Description==
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==Data==
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* 4 hydrogels were prepared.  2 were made using PVOH MW = 22,000, while the other two were made using PVOH MW = 146,000 - 186,000.  For each molecular weight, one hydrogel was made with isopropanol alone, and one was made with isopropanol + glutaraldehyde. The amounts of isopropanol used is the same as in previous trials.
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* Add data and results here...
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==Notes==
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# Measure out 2 samples of 1 g PVOH (MW = 22,000) and 2 samples of 1 g PVOH (MW = 146,000 - 186,000)
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This area is for any observations or conclusions that you would like to note.
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# Dissolve in 20 mL water (Dissolve on heat)
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# Once dissolved, 0.0174 mL isopropanol was added to each sample. The samples were allowed to stir for a few minutes.
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# 1 mL glutaraldehyde was added to the 2 hydrogels that are isopropanol + glut
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# The hydrogels were placed in the freezer for 24 hours
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Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.
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==Data==
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[[Category:Course]]
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* No data was collected today.
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[[Category:Miscellaneous]]
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==Notes==
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* After an hour or so, the PVOH still had not dissolved, so the samples were transferred into larger beakers and an additional 10 mL water was added (total volume = 30 mL)

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Objective

Make PVOH hydrogels using isopropanol

Description

  • 4 hydrogels were prepared. 2 were made using PVOH MW = 22,000, while the other two were made using PVOH MW = 146,000 - 186,000. For each molecular weight, one hydrogel was made with isopropanol alone, and one was made with isopropanol + glutaraldehyde. The amounts of isopropanol used is the same as in previous trials.
  1. Measure out 2 samples of 1 g PVOH (MW = 22,000) and 2 samples of 1 g PVOH (MW = 146,000 - 186,000)
  2. Dissolve in 20 mL water (Dissolve on heat)
  3. Once dissolved, 0.0174 mL isopropanol was added to each sample. The samples were allowed to stir for a few minutes.
  4. 1 mL glutaraldehyde was added to the 2 hydrogels that are isopropanol + glut
  5. The hydrogels were placed in the freezer for 24 hours


Data

  • No data was collected today.

Notes

  • After an hour or so, the PVOH still had not dissolved, so the samples were transferred into larger beakers and an additional 10 mL water was added (total volume = 30 mL)



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