User:Karlena L. Brown/Notebook/PVOH Research/2012/11/09

(Difference between revisions)

Revision as of 15:14, 30 November 2012

PVOH Research

In 10mL beaker, weigh out ~ 1.0 grams PVOH (MW 22K)
Then, using a graduated cylinder add ~ 5 mL H₂O to the beaker
After adding and combining PVOH (MW 22K) in a small beaker with H₂O, add a stir bar and prepare to stir solution
On hot plate, stir and heat beaker solutions at 70-80°C for ~ 12 min or until PVOH dissolves
Once PVOH solids thoroughly dissolve in solution, add a small portion of acetic acid (HoAc)
In addition, add ~2 drops of HCl to the solution and continue to stir for an hour
Allow the solution to cool and titration

@@ Line 9: / Line 9: @@
 * Prepare PVOH films for Acetylation Reactions
-==Acetylation Reaction Protocol==
+==Acetylation Reaction Protocol & Film Preparation==
+* In 10mL beaker, weigh out ~ 1.0 grams PVOH (MW 22K)
+* Then, using a graduated cylinder add ~ 5 mL H<sub>2</sub>O to the beaker
+* After adding and combining PVOH (MW 22K) in a small beaker with H<sub>2</sub>O, add a stir bar and prepare to stir solution
+* On hot plate, stir and heat beaker solutions at 70-80°C for ~ 12 min or until PVOH dissolves
+* Once PVOH solids thoroughly dissolve in solution, add a small portion of acetic acid (HoAc)
+* In addition, add ~2 drops of HCl to the solution and continue to stir for an hour
+* Allow the solution to cool and titration
+{| {{table}}
+| align="center" style="background:#f0f0f0;"|'''PVOH Mass (g)'''
+| align="center" style="background:#f0f0f0;"|'''Acetic Acid (mL)'''
+| align="center" style="background:#f0f0f0;"|'''Hydrochloric Acid (drops)'''
+|-
+| 1.0062||1.30||2
+|-
+| 1.0043||0.26||2
+|-
+| 1.0052||0.52||2
+|-
+| 1.0027||0.78||2
+|}
 ==Acetylation Reaction Film Preparation==
 ==Acetylation Reaction Calculations==