User:Karlena L. Brown/Notebook/PVOH Research/2012/11/07

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Revision as of 23:15, 23 November 2012

PVOH Research

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-==PVOH Film Preparations==
+==OBJECTIVES==
-'''Prepared PVOH films in water:'''
+==UV-Vis Limit of Detection For Salts==
-* In 10mL beaker, weigh out ~ 0.5 grams PVOH (MW 130,000)
+==UV-Vis LOD Spectrums: 1.89μM Porphyrin Solution w/ Varied Salts & Salt Concentrations==
-'''(Actual Mass = 0.4934g)'''
-* Then, using a graduated cylinder add ~ 3 mL H<sub>2</sub>O to the beaker
-* In another 10mL beaker, weigh out ~ 1.0 gram PVOH (MW 130,000)
-'''(Actual Mass = 0.9965g)'''
-* Then, using a graduated cylinder add ~ 5 mL H<sub>2</sub>O to the beaker
-'''Standard PVOH Film Protocol:'''
-* After adding and combining PVOH (MW 130,000) in small beakers with H<sub>2</sub>O, add stir bars and prepare to stir solution.
-* On hot plate, stir and heat both beaker solutions at 70-80°C for ~ 12 min or until PVOH dissolves.
-* 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:'''
-* An additional 2-3 mL H<sub>2</sub>O 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)