User:Mary Mendoza/Notebook/CHEM 581: Experimental Chemistry I/2014/09/17: Difference between revisions
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|style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> Project name</span> | |style="background-color: #EEE"|[[Image:owwnotebook_icon.png|128px]]<span style="font-size:22px;"> Project name</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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==Collection of DSC data== | ==Collection of DSC data== | ||
* | * Jacob Esenther extracted the DSC data from the Qseries interface, TA Universal Analysis. The data was compiled in a table below: | ||
{| {{table}} | |||
| align="center" style="background:#f0f0f0;"|'''PVA''' | |||
| align="center" style="background:#f0f0f0;"|'''Conc. (ppm)''' | |||
| align="center" style="background:#f0f0f0;"|'''''' | |||
| align="center" style="background:#f0f0f0;"|'''Energy (J/g)''' | |||
| align="center" style="background:#f0f0f0;"|'''H₂0 (mg)''' | |||
| align="center" style="background:#f0f0f0;"|'''Glass Transition (⁰C)''' | |||
| align="center" style="background:#f0f0f0;"|'''Water Evaporation Peak (⁰C)''' | |||
|- | |||
| |||||||||||| | |||
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| ||2||||928.4||1.3239||69.11 and 79.8||108.58 | |||
|- | |||
| ||8||||1001||1.9796||68.77||99.31 | |||
|- | |||
| ||80||||1340||2.9384||68.338||105.91 | |||
|- | |||
| ||200||||819.4||1.0803||68.63||128.77 | |||
|- | |||
| ||Control||||582.9||0.95407||68.566||125.61 | |||
|- | |||
| |||||||||||| | |||
|- | |||
| PVA-Clay||2||||1303||1.8931||68.716||100.97 | |||
|- | |||
| ||8||||883.8||1.4585||68.644||99.59 | |||
|- | |||
| ||80||||861.3||2.2633||68.866||102.05, 106.55, and 128.44 | |||
|- | |||
| ||200||||N/A||N/A||N/A||N/A | |||
|- | |||
| ||Control||||671.2||0.90296||69.164||116.15 and 105.16 | |||
|- | |||
| | |||
|} | |||
* James Schwabacher prepared the following graphs from the DSC: | |||
[[Image:DSC PVA CONTROL MG MJJ 092014.png|center|800x579px|thumb|Polyvinyl Alcohol Film]] | |||
[[Image:DSC PVA 2ppm MG MJJ 092014.png|center|800x580px|thumb|Polyvinyl Alcohol Film in 2 ppm malachite green]] | |||
[[Image:DSC PVA 8ppm MG MJJ 092014.png|center|800x581px|thumb|Polyvinyl Alcohol Film in 8 ppm malachite green]] | |||
[[Image:DSC PVA 80ppm MG MJJ 092014.png|center|800x580px|thumb|Polyvinyl Alcohol Film in 80 ppm malachite green]] | |||
[[Image:DSC PVA 200ppm MG MJJ 092014.png|center|800x578px|thumb|Polyvinyl Alcohol Film in 200 ppm malachite green]] | |||
[[Image:DSC PVA CONTROL MG MJJ 092014.png|center|800x579px|thumb|PVA-sodium montmorillonite film]] | |||
[[Image:DSC PVA NaMT 2ppm MG MJJ 092014.png|center|800x581px|thumb|PVA-sodium montmorillonite film in 2 ppm malachite green]] | |||
[[Image:DSC PVA NaMT 8ppm MG MJJ 092014.png|center|800x580px|thumb|PVA-sodium montmorillonite film in 8 ppm malachite green]] | |||
[[Image:DSC PVA NaMT 80ppm MG MJJ 092014.png|center|800x580px|thumb|PVA-sodium montmorillonite film in 80 ppm malachite green]] | |||
[[Image:DSC PVA NaMT 200ppm MG MJJ 092014.png|center|800x580px|thumb|PVA-sodium montmorillonite film in 200 ppm malachite green]] | |||
* A closer look of the PVA-sodium montmorillonite film indicates that there is no defined glass transition as shown below: | |||
[[Image:DSC PVA NaMT 200ppm zoomed MG MJJ 092014.png|center|800x579px|thumb|PVA-sodium montmorillonite film in 200 ppm malachite green; no defined glass transtion curves]] | |||
==UV-Vis of MG-PVA samples== | ==UV-Vis of MG-PVA samples== | ||
[[Image:9 17 MG PVA Abs.png|left|thumb|Table 1. Absorbance of Polyvinyl Alcohol Films in Malachite Green]] | |||
* Using quartz cuvettes, absorbance of 2 mL malachite green samples were collected. | * Using quartz cuvettes, absorbance of 2 mL malachite green samples were collected. | ||
* 80 and 200 ppm malachite green samples were diluted to 100x and 50x, respectively. | * 80 and 200 ppm malachite green samples were diluted to 100x and 50x, respectively. | ||
* The absorbance of each sample are listed on table 1. | |||
[[Image:9 17 MG PVA UV vis.png|center|thumb|800x458px|Absorbance Spectra of PVA films in Malachite Green]] | |||
==Centrifuge of Ionic Liquid Exchange Clay== | |||
* In the original [[User:Matt Hartings/Notebook/AU Biomaterials Design Lab/2014/09/10|protocol]], the instruction called for vacuum filtration of our mixture, tributylhexadecylphosphonium bromide, through a 0.2μm nylon fiber. | |||
* A consensual decision was made that placing the mixtures in centrifuge would provide better results of separation. | |||
* The sample weighed the amount of 17.69 g. Addition of water was made to balance the viscous mixture, (1-hexadecyl)triphenylphosphonium bromide), from Eleni's group. The final weight was 27.42 g. | |||
* The mixture was centrifuged for 30 minutes at 4000 rpm, 4°C. The centrifuge used was the make of Thermo Scientific Sorvall RC 6+ Centrifufge. | |||
* The rotor chosen to perform the centrifuge was SH-3000 4700 max. | |||
[[Image:IMG 3043 2.JPG|thumb|300x450px|left|Thermo Scientific Sorvall RC 6+ Centrifufge]] | |||
[[Image:IMG 3046.JPG|thumb|300x450px|center|Centrifuge settings]] | |||
[[Image:IMG 3044.JPG|thumb|300x450px|left|SH-3000 4700 max rotor]] | |||
* At 10:53 AM, samples were observed to have three distinct layers; top and bottom layer were clay, and the middle was composed of water/supernatant. | |||
* The supernatant was collected and transferred into a 50 mL falcon tube. This was stored if additional analysis was needed in the future. | |||
* Two sets of washes are required for the exchanged clay. Each wash comprised of washing the clay with water to remove adsorbed NaCl and ethanol to remove remaining surfactants. | |||
* After the washes were completed by Dr. Hartings, the mixture was stored in an oven to evaporate excess water. | |||
==Powder X-RAY Diffraction of MG-PVA-clay samples== | ==Powder X-RAY Diffraction of MG-PVA-clay samples== | ||
* Eleni Kalivas executed the introduction of the usage of the powder X-RAY diffraction instrument. The make of the instrument is by Rigaku MiniFlex II. | |||
* The parameters set for the data collection made via the Standard Measurement interface are as follows: | |||
** 2° start angle | |||
** 40° stop angle | |||
** 0.5 inch sampling width | |||
** 1°/minute scanning speed | |||
*** The original [[User:Matt Hartings/Notebook/AU Biomaterials Design Lab/2014/09/03|protocol]] stated a 1°/second scanning speed | |||
* Our group provided the blank PVA film which was placed in position 4. Other groups' PVA films were placed in the following order: | |||
** Position 1: Dr. Hartings' solid, sodium montmorillonite | |||
** Position 2: 8 ppm MG from Madeleine and Alicia | |||
** Position 3: group's 2 ppm MG | |||
** Position 5: 80 ppm MG from Melvin, Eleni, and Becca | |||
** Position 6: 200 ppm MG from Andrew, Michael, and Tami | |||
==Completion of Exfoliated Clay Film Synthesis== | ==Completion of Exfoliated Clay Film Synthesis== | ||
* This was performed by our group member, Jacob Esenther, following the [[User:Matt Hartings/Notebook/AU Biomaterials Design Lab/2014/08/29|Completion of Film Synthesis protocol]] from August 29, 2014. | |||
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Latest revision as of 00:18, 27 September 2017
Project name | Main project page Previous entry Next entry | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Collection of DSC data
UV-Vis of MG-PVA samples
Centrifuge of Ionic Liquid Exchange Clay
Powder X-RAY Diffraction of MG-PVA-clay samples
Completion of Exfoliated Clay Film Synthesis
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