User:Mobeen Ashraf/Notebook/Chem-581/2012/11/28

Experimental Chemistry

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Objective Objective 1) Swelling Studies on PVOH/Glutaraldehyde Films Objective 2) UV-VIS studies on 0.5 g PVOH, 1 ml porphyrin films. Description Swelling Studies: The initial mass of PVOH/Glutaraldehyde film, before swelling = 0.6707 g The final mass of PVOH/Glutaraldehyde film, after swelling = 0.6878 g % Change = (Final Mass- Initial Mass)/(Initail Mass) * 100 Therefore, % Increase = (0.6878g-0.6707g)/(0.6707) = 2.55% increase UV-Vis Analysis: Thin 0.5 g PVOH, 1 ml glutaraldehyde and porphyrin film, in a rectangular slit form, was cut off and placed in a 1 cm wide cuvette for the absorption studies. Note that the width of the film was measure by using the vernier callipers, and it was determined to be 0.55 mm, which is equivalent to 0.0055 cm. Data Add data and results here... Notes This area is for any observations or conclusions that you would like to note. 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.