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

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* Prepare PVOH films for Acetylation Reactions
* 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 Film Preparation==
==Acetylation Reaction Calculations==
==Acetylation Reaction Calculations==

Revision as of 12:14, 30 November 2012

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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 titration
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


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