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

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(→Acetylation Reaction Protocol & Film Preparation)
(→Acetylation Reaction Protocol & Film Preparation)
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* Allow the solution to cool and prepare for titration
* Allow the solution to cool and prepare for titration
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'''REPEAT STANDARD PROCEDURE ABOVE FOUR TIMES'''
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'''REPEAT PROCEDURE ABOVE FOUR TIMES TO PREPARE FOUR FILMS'''
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Revision as of 15:17, 30 November 2012

PVOH Research Main project page
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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)
1.00621.302
1.00430.262
1.00520.522
1.00270.782

Acetylation Reaction Film Preparation

Acetylation Reaction Calculations


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