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

From OpenWetWare
Jump to: navigation, search
(Acetylation Reaction Protocol & Film Preparation)
(Acetylation Reaction Protocol & Film Preparation)
Line 18: Line 18:
 
* Allow the solution to cool and prepare for titration
 
* Allow the solution to cool and prepare for titration
  
'''REPEAT STANDARD PROCEDURE ABOVE FOUR TIMES'''
+
'''REPEAT PROCEDURE ABOVE FOUR TIMES TO PREPARE FOUR FILMS'''
  
 
{| {{table}}
 
{| {{table}}

Revision as of 11:17, 30 November 2012

Owwnotebook icon.png PVOH Research <html><img src="/images/9/94/Report.png" border="0" /></html> Main project page
<html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>Previous entry<html>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html>

OBJECTIVES

  • Prepare PVOH films for Acetylation Reactions

Acetylation Reaction Protocol & Film Preparation

  • 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 prepare for titration

REPEAT PROCEDURE ABOVE FOUR TIMES TO PREPARE FOUR FILMS

PVOH Mass (g) Acetic Acid (mL) 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