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

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==Description==
==Description==
   
   
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0.1g of polyvinyl alochol film (0.5 g in 6mL H2O) treated with gluteraldehyde was placed in a solution containing 100mL water, 2mL HCl, and 20g Na2SO4 @ 70 degrees celsius. 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. A 1% HCl solution was prepared and heated to 70 degrees celsius.
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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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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

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Notes

See NASA Technical Paper 1407



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