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|style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> PVOH Research</span> | |style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> PVOH Research</span> | ||
|style="background-color: #F2F2F2" align="center"| | |style="background-color: #F2F2F2" align="center"|[[File:Report.png|frameless|link={{#sub:{{FULLPAGENAME}}|0|-11}}]][[{{#sub:{{FULLPAGENAME}}|0|-11}}|Main project page]]<br />{{#if:{{#lnpreventry:{{FULLPAGENAME}}}}|[[File:Resultset_previous.png|frameless|link={{#lnpreventry:{{FULLPAGENAME}}}}]][[{{#lnpreventry:{{FULLPAGENAME}}}}{{!}}Previous entry]] }}{{#if:{{#lnnextentry:{{FULLPAGENAME}}}}|[[{{#lnnextentry:{{FULLPAGENAME}}}}{{!}}Next entry]][[File:Resultset_next.png|frameless|link={{#lnnextentry:{{FULLPAGENAME}}}}]]}} | ||
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==PVOH | ==OBJECTIVES== | ||
''' | * Continue preparing polyvinyl alcohol hydrogels for experimental analysis | ||
* In | * Prepare and replenish new surfactant exchanged clays | ||
'''( | |||
* Then | ==PVOH 130K Prepared Hydrogel Samples== | ||
* | {| {{table}} | ||
'''(Actual Mass = | | align="center" style="background:#f0f0f0;"|'''PVOH vs. Clay Ratio''' | ||
| align="center" style="background:#f0f0f0;"|'''Clay Selection''' | |||
| align="center" style="background:#f0f0f0;"|'''PVOH 130K Mass (g)''' | |||
| align="center" style="background:#f0f0f0;"|'''Actual Clay Mass (g)''' | |||
| align="center" style="background:#f0f0f0;"|'''H<sub>2</sub>O Added (mL)''' | |||
| align="center" style="background:#f0f0f0;"|'''Dye Concentration (mM)''' | |||
| align="center" style="background:#f0f0f0;"|'''Dye Amount Added (μL)''' | |||
|- | |||
| 90:10||50% CEC NaMT w/ Bu<sub>3</sub>HdP<sup>+</sup>||0.92966||0.09990||6.0||92||65.5 | |||
|- | |||
| 50:50||50% CEC NaMT w/ Bu<sub>3</sub>HdP<sup>+</sup>||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 | |||
|} | |||
==Preparations For Clay - Surfactant Exchanged Soils== | |||
'''(Important Information and Notes About Clay)''' | |||
# Clay is made from silicon dioxide | |||
# If ions within the clay are changed, then clay absorbance, color, and exchange functions are affected | |||
'''(Such ions incldue: Al<sup>3+</sup>, Mg<sup>2+</sup>, Si<sup>2+</sup>, Li<sup>+</sup>, and Fe<sup>2+ or 3+</sup>,)''' | |||
----------------------------------------------------------------------------------------------------------------------- | |||
* In a 100mL closed cap beaker, weigh out ~ 2 grams of NaMT clay to do a 110% ion exchange with DMHXLBR | |||
* Next, complete calculations to determine how much DMHXLBR will be needed to complete '''110% exchange''' | |||
'''1.9999 g NaMT x (92 meqv/100 g NaMT) x (1 mol DMHXLBR/1000 meqv) x (110/100)% x (431.45 g DMHXLBR/1 mol DMHXLBR) = 0.8732 g DMHXLBR''' | |||
* Then add a stir bar along with ~ 25mL of both H<sub>2</sub>O and ethanol to the clay and surfactant DMHXLBR mixture | |||
* Afterwards, cap the beaker and begin stirring the solution on a stir plate for ~ 1 week | |||
'''(Repeat the entire process again in order to complete a 110% exchange with laponite clay and surfactant DMHXLBR)''' | |||
* Complete calculations to determine how much Bu<sub>3</sub>HdP<sup>+</sup> will be needed to complete '''50% exchange''' | |||
'''2.9672 g NaMT x (55 meqv/100 g NaMT) x (1 mol DMHXLBR/1000 meqv) x (110/100)% x (431.45 g DMHXLBR/1 mol DMHXLBR) = 0.7745 g DMHXLBR''' | |||
'''(Repeat the entire process again in order to complete a 50% exchange with NaMT clay and surfactant, Bu<sub>3</sub>HdP<sup>+</sup>)''' | |||
* Complete calculations to determine how much Bu<sub>3</sub>HdP<sup>+</sup> will be needed to complete '''50% exchange''' | |||
'''2.0001 g NaMT x (92 meqv/100 g NaMT) x (1 mol Bu<sub>3</sub>HdP<sup>+</sup>/1000 meqv) x (50/100)% x (507.65 g Bu<sub>3</sub>HdP<sup>+</sup>/1 mol Bu<sub>3</sub>HdP<sup>+</sup>) = 0.4671 g Bu<sub>3</sub>HdP<sup>+</sup>''' | |||
{| {{table}} | |||
| align="center" style="background:#f0f0f0;"|'''Surfactant Exchange Ratio''' | |||
| align="center" style="background:#f0f0f0;"|'''Clay Selection''' | |||
| align="center" style="background:#f0f0f0;"|'''Surfactant Selection''' | |||
| align="center" style="background:#f0f0f0;"|'''Actual Clay Mass (g)''' | |||
| align="center" style="background:#f0f0f0;"|'''Actual Surfactant Mass (g)''' | |||
| align="center" style="background:#f0f0f0;"|'''H<sub>2</sub>O Added (mL)''' | |||
| align="center" style="background:#f0f0f0;"|'''Ethanol Added (mL)''' | |||
|- | |||
| 50%||(NaMT)||Bu<sub>3</sub>HdP<sup>+</sup>||2.0001||0.4676||25||25 | |||
|- | |||
| 110%||NaMT||DMHXLBR||1.9999||0.79080||50||50 | |||
|- | |||
| 110%||Laponite||DMHXLBR||2.9672||0.77470||50||50 | |||
|} | |||
==Notes== | |||
* | * Two types of clay that were used included: | ||
* | # Laponite | ||
* | # Sodium Montmorrillonite (NaMT) | ||
* Two types of surfactants that were used included: | |||
# Tributyl hexadecyl phosphonium bromide (Bu<sub>3</sub>HdP<sup>+</sup>) | |||
# Methyl 16 bromohexadecanoate (DMHXLBR) | |||
* Surfactant exchanged clays were prepared based upon the exchange ratios and calculations. | |||
* For the 110% CEC Laponite w/ DMHXLBR actually 50mL of each of both ethanol and water was used. | |||
* For the 110% CEC NaMT w/ DMHXLBR actually 50mL of each of both ethanol and water was used. | |||
* For the 50:50 110% CEC Laponite in PVOH 130K solution when making hydrogels, an extra 3mL of H<sub>2</sub>O was added; therefore, the dye amount added had to be increased, ~ 54.5μL of 165μM added. | |||
* For the 50:50 110% CEC NaMT in PVOH 130K solution when making hydrogels, an extra 2mL of H<sub>2</sub>O was added; therefore, the dye amount added had to be increased, ~ 48.5μL of 165μM added. | |||
* For the 90:10 110% CEC NaMT in PVOH 130K solution when making hydrogels, an extra 2mL of H<sub>2</sub>O was added; therefore, the dye amount added had to be increased, ~ 87.0μL of 92μM added. | |||
Latest revision as of 22:26, 26 September 2017
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OBJECTIVES
PVOH 130K Prepared Hydrogel Samples
Preparations For Clay - Surfactant Exchanged Soils(Important Information and Notes About Clay)
(Such ions incldue: Al3+, Mg2+, Si2+, Li+, and Fe2+ or 3+,)
1.9999 g NaMT x (92 meqv/100 g NaMT) x (1 mol DMHXLBR/1000 meqv) x (110/100)% x (431.45 g DMHXLBR/1 mol DMHXLBR) = 0.8732 g DMHXLBR
(Repeat the entire process again in order to complete a 110% exchange with laponite clay and surfactant DMHXLBR)
2.9672 g NaMT x (55 meqv/100 g NaMT) x (1 mol DMHXLBR/1000 meqv) x (110/100)% x (431.45 g DMHXLBR/1 mol DMHXLBR) = 0.7745 g DMHXLBR (Repeat the entire process again in order to complete a 50% exchange with NaMT clay and surfactant, Bu3HdP+)
2.0001 g NaMT x (92 meqv/100 g NaMT) x (1 mol Bu3HdP+/1000 meqv) x (50/100)% x (507.65 g Bu3HdP+/1 mol Bu3HdP+) = 0.4671 g Bu3HdP+
Notes
# Laponite # Sodium Montmorrillonite (NaMT)
# Tributyl hexadecyl phosphonium bromide (Bu3HdP+) # Methyl 16 bromohexadecanoate (DMHXLBR)
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