User:Karlena L. Brown/Notebook/PVOH Research/2013/02/01: Difference between revisions

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(Autocreate 2013/02/01 Entry for User:Karlena_L._Brown/Notebook/PVOH_Research)
 
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==PVOH Film Preparations==
==OBJECTIVES==
'''Prepared PVOH films in water:'''
* Continue preparing polyvinyl alcohol hydrogels for experimental analysis
* In 10mL beaker, weigh out ~ 0.5 grams PVOH (MW 130,000)  
* Prepare and replenish new surfactant exchanged clays
'''(Actual Mass = 0.4934g)'''
* Then, using a graduated cylinder add ~ 3 mL H<sub>2</sub>O to the beaker
==PVOH 130K Prepared Samples==
* In another 10mL beaker, weigh out ~ 1.0 gram PVOH (MW 130,000)
{| {{table}}
'''(Actual Mass = 0.9965g)'''
| align="center" style="background:#f0f0f0;"|'''PVOH vs. Clay Ratio'''
* Then, using a graduated cylinder add ~ 5 mL H<sub>2</sub>O to the beaker
| align="center" style="background:#f0f0f0;"|'''Clay Selection'''
 
| align="center" style="background:#f0f0f0;"|'''PVOH 130K Mass (g)'''
'''Standard PVOH Film Protocol:'''
| align="center" style="background:#f0f0f0;"|'''Actual Clay Mass (g)'''
* 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.
| align="center" style="background:#f0f0f0;"|'''H<sub>2</sub>O Added (mL)'''
* On hot plate, stir and heat both beaker solutions at 70-80°C for ~ 12 min or until PVOH dissolves.
| align="center" style="background:#f0f0f0;"|'''Dye Concentration (mM)'''
* 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.  
| align="center" style="background:#f0f0f0;"|'''Dye Amount Added (μL)'''
 
|-
'''Notes:'''
| 90:10||50% CEC NaMT w/ Bu<sub>3</sub>HdP<sup>+</sup>||0.92966||0.09990||6.0||92||65.5
* 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
| 50:50||50% CEC NaMT w/ Bu<sub>3</sub>HdP<sup>+</sup>||0.50610||0.50010||6.0||165||36.4
* While transferring solutions to Teflon dishes, loss of sample within the small beakers (sample loss = incomplete sample transfer)
|-
 
| 90:10||NaMT||0.89910||0.10020||6.0||92||65.5
|-
| 50:50||NaMT||0.50070||0.49960||6.0||165||36.4
|-
| 90:10||Laponite||0.91610||0.10040||6.0||92||65.5
|-
| 50:50||Laponite||0.49900||0.50090||6.0||165||36.4
|-
| 90:10||110% CEC NaMT w/ DMHXLBR||0.89970||0.10050||6.0||92||65.5
|-
| 50:50||110% CEC NaMT w/ DMHXLBR||0.49920||0.49910||6.0||165||36.4
|-
| 90:10||110% CEC Laponite w/ DMHXLBR||0.90080||0.09990||6.0||92||65.5
|-
| 50:50||110% CEC Laponite w/ DMHXLBR||0.49980||0.49980||6.0||165||36.4
|}


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Revision as of 16:33, 8 February 2013

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OBJECTIVES

  • Continue preparing polyvinyl alcohol hydrogels for experimental analysis
  • Prepare and replenish new surfactant exchanged clays

PVOH 130K Prepared Samples

PVOH vs. Clay Ratio Clay Selection PVOH 130K Mass (g) Actual Clay Mass (g) H2O Added (mL) Dye Concentration (mM) Dye Amount Added (μL)
90:10 50% CEC NaMT w/ Bu3HdP+ 0.92966 0.09990 6.0 92 65.5
50:50 50% CEC NaMT w/ Bu3HdP+ 0.50610 0.50010 6.0 165 36.4
90:10 NaMT 0.89910 0.10020 6.0 92 65.5
50:50 NaMT 0.50070 0.49960 6.0 165 36.4
90:10 Laponite 0.91610 0.10040 6.0 92 65.5
50:50 Laponite 0.49900 0.50090 6.0 165 36.4
90:10 110% CEC NaMT w/ DMHXLBR 0.89970 0.10050 6.0 92 65.5
50:50 110% CEC NaMT w/ DMHXLBR 0.49920 0.49910 6.0 165 36.4
90:10 110% CEC Laponite w/ DMHXLBR 0.90080 0.09990 6.0 92 65.5
50:50 110% CEC Laponite w/ DMHXLBR 0.49980 0.49980 6.0 165 36.4


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