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

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==Objective==
==Objective==


Objective 1) Prepare 3 PVOH Films (plain MW 22,000, glutaraldehyde cross-linked, and porphyrine dihydrogen chloride cross-linked.
Objective 1) Swelling Studies on PVOH/Glutaraldehyde Films


Objective 2) Atomic Absorption Spectroscopy for all Cu standards.
Objective 2) UV-VIS studies on 0.5 g PVOH, 1 ml porphyrin films.


==Description==
==Description==


* 3 PVOH films were prepared: 0.5 g MW of 22,000, 1 ml glutaraldehyde, and 1 ml of porphrine dihydrogen chloride.  
 
* AAS studies for all the Cu standards: NaMT- concentration of 1.25 g/500 ml, for 1min, 5 min and 10 mins standards, 50 % CEC exchange-concentration of 1.25 g/500 ml, for 1 min, 5 min and 10 mins standards, 100% CEC exchange, for 1 min, 5 min and 10 mins standards, and Fe3O4-concentration of 1.25 g/500 ml, for 1 min, 5 min and 10 mins standards.
*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==
==Data==

Revision as of 15:30, 2 December 2012

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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.



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