Difference between revisions of "User:Karlena L. Brown/Notebook/PVOH Research/2012/11/09"

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(Autocreate 2012/11/09 Entry for User:Karlena_L._Brown/Notebook/PVOH_Research)
(PVOH Film Preparations)
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==PVOH Film Preparations==
'''Prepared PVOH films in water:'''
==Acetylation Reaction Protocol==
* In 10mL beaker, weigh out ~ 0.5 grams PVOH (MW 130,000)
==Acetylation Reaction Film Preparation==
'''(Actual Mass = 0.4934g)'''
==Acetylation Reaction Calculations==
* Then, using a graduated cylinder add ~ 3 mL H<sub>2</sub>O to the beaker
==Standardization Protocol==
* In another 10mL beaker, weigh out ~ 1.0 gram PVOH (MW 130,000)
==Standardization Preparation and Calculations==
'''(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.
* 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)

Revision as of 20:21, 23 November 2012

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Acetylation Reaction Protocol

Acetylation Reaction Film Preparation

Acetylation Reaction Calculations

Standardization Protocol

Standardization Preparation and Calculations