# User:Karlena L. Brown/Notebook/PVOH Research/2012/09/28

(Difference between revisions)
 Revision as of 02:21, 5 October 2012 (view source) (Autocreate 2012/09/28 Entry for User:Karlena_L._Brown/Notebook/PVOH_Research)← Previous diff Revision as of 02:27, 5 October 2012 (view source) (→PVOH Film Preparations)Next diff → Line 6: Line 6: | colspan="2"| | colspan="2"| - ==PVOH Film Preparations== + ==OBJECTIVES== - '''Prepared PVOH films in water:''' + # Run X-ray Diffraction of 2:1 Clay-α-Fe2O4 - * In 10mL beaker, weigh out ~ 0.5 grams PVOH (MW 130,000) + # Calculate the amount of Na+ ions in the 2000ppm SO42- solution - '''(Actual Mass = 0.4934g)''' + # Calculate the amount of Cu2+ ions in the 2000ppm SO42- solution - * Then, using a graduated cylinder add ~ 3 mL H2O to the beaker + # Calculate the amount of Na+ ions in the 20ppm SO42- solution - * In another 10mL beaker, weigh out ~ 1.0 gram PVOH (MW 130,000) + # Calculate the amount of Cu2+ ions in the 20ppm SO42- solution - '''(Actual Mass = 0.9965g)''' + - * Then, using a graduated cylinder add ~ 5 mL H2O to the beaker + - '''Standard PVOH Film Protocol:''' + ==X-Ray Diffraction Instructions== - * After adding and combining PVOH (MW 130,000) in small beakers with H2O, add stir bars and prepare to stir solution. + ==Na+ and Cu2+ Ion Calculations in 2000ppm SO42- Solutions== - * On hot plate, stir and heat both beaker solutions at 70-80°C for ~ 12 min or until PVOH dissolves. + ==Na+ and Cu2+ Ion Calculations in 20ppm SO42- Solutions== - * Once PVOH solids thoroughly dissolve in solution, pour each solution in a Teflon dish to sit, cool, and dry in a fume hood for ~ 1 day. + '''Notes:''' '''Notes:'''

## Revision as of 02:27, 5 October 2012

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## OBJECTIVES

1. Run X-ray Diffraction of 2:1 Clay-α-Fe2O4
2. Calculate the amount of Na+ ions in the 2000ppm SO42- solution
3. Calculate the amount of Cu2+ ions in the 2000ppm SO42- solution
4. Calculate the amount of Na+ ions in the 20ppm SO42- solution
5. Calculate the amount of Cu2+ ions in the 20ppm SO42- solution

## Na+ and Cu2+ Ion Calculations in 20ppm SO42- Solutions

Notes:

• An additional 2-3 mL H2O was added to each solution to aid the dissolving of the PVOH
• Heat was reduced when solutions began to boil too rapidly
• While transferring solutions to Teflon dishes, loss of sample within the small beakers (sample loss = incomplete sample transfer)