User:Allison K. Alix/Notebook/CHEM-581/2012/09/14: Difference between revisions

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==Objective==
==Objective==
In Situ cross-linking of polyvinyl alcohol films


==Description==
==Description==
0.1g of polyvinyl alochol film (0.5 g in 6mL H<sub>2</sub>O) treated with gluteraldehyde was placed in a solution containing 100mL H<sub>2</sub>O, 2mL HCl, and 20g Na<sub>2</sub>SO<sub>4</sub> @ 70°C. The sodium sulfate is added to decrease solubility of the polymer during the acetalization reaction. The polymer film was immersed in solution with stirring for 1 hour. The film was then rinsed with H<sub>2</sub>O and immersed in a 1% HCl solution @ 70°C for 1/2 hour. It was then transferred to a 0.2M solution of sodium bicarbonate for 15 minutes, to neutralize the HCl from the previous solution.


==Data==
==Data==
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==Notes==
==Notes==
This area is for any observations or conclusions that you would like to note.


 
See NASA Technical Paper 1407
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.
 
[[Category:Course]]
[[Category:Miscellaneous]]




Revision as of 12:25, 5 October 2012

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Objective

In Situ cross-linking of polyvinyl alcohol films

Description

0.1g of polyvinyl alochol film (0.5 g in 6mL H2O) treated with gluteraldehyde was placed in a solution containing 100mL H2O, 2mL HCl, and 20g Na2SO4 @ 70°C. The sodium sulfate is added to decrease solubility of the polymer during the acetalization reaction. The polymer film was immersed in solution with stirring for 1 hour. The film was then rinsed with H2O and immersed in a 1% HCl solution @ 70°C for 1/2 hour. It was then transferred to a 0.2M solution of sodium bicarbonate for 15 minutes, to neutralize the HCl from the previous solution.

Data

  • Add data and results here...

Notes

See NASA Technical Paper 1407



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