User:Moira M. Esson/Notebook/CHEM-581/2012/11/02: Difference between revisions
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#Allow the ethyl acetate solution to stir until it appears no color is leaking out from the film | #Allow the ethyl acetate solution to stir until it appears no color is leaking out from the film | ||
<br> | <br> | ||
*The furfural film prepared on 10/31/2012 followed the general protocol for rinsing of fufural films. | |||
*The fufural film was spin in EtAc for 2.5hours | |||
'''Observations''': | |||
*Before placement in the ethyl acetate, the film was a dark brown color(uniformly distributed throughout the film) and was very rigid. So rigid slight cracking appeared to be occurring toward the edge of the film | |||
*While in the ethyl acetate, approximately 2 hours into the stirring, slight leakage of furfural from the film. Very slight(perhaps no leakage at all). Some of the ethyl acetate solution was placed in a falcon tube for later analysis. | |||
*After 2.5hrs in the ethyl acetate, film was still dark brown colored and extremely rigid | |||
<br> | |||
==FTIR== | |||
*The general protocol for FTIR was followed | |||
Ran films: | |||
#PVOH(22K)+1mL GA+100% CEC(prepared 10/3/2012) | |||
#PVOH(22K)+1mL GA+50% CEC(prepared 10/4/2012) | |||
#PVOH(22K)+1mL GA+NaMT(prepared 10/3/2012) | |||
#dehydrated crosslinked PVOH(22K)+1mL GA spun 10 min in CuSO<sub>4</sub> (prepared 10/13/2012) | |||
#Thin FTIR film(0.1000g PVOH 22K)(prepared 9/21/2012) | |||
#PVOH(22K)+1mL GA (prepared 10/3/2012) | |||
#PVOH(22K)+0.3199 furfural+HCl(after spun with ethyl acetate) | |||
FTIR Images from previous runs: | |||
<br> | |||
[[Image:FTIR.JPG]] | |||
<br> | |||
FTIR Film preparation: | |||
General protocol for the preparation of crosslinked glutaraldehyde films for FTIR: | |||
*Crosslinked glutaraldehyde films were patted dry with a paper towel, had a small portion cut off and placed in a 10mL beaker to completely dry. The remaining large portion of the film was reweighed and placed in a beaker filled with deionized H<sub>2</sub>O for further storage. | |||
Prepared films: | |||
{| {{table}} | |||
| align="center" style="background:#f0f0f0;"|'''Films''' | |||
| align="center" style="background:#f0f0f0;"|'''New mass(g)''' | |||
|- | |||
| PVOH(22K)+0.5mL GA+100% CEC crosslinked prepared 10/19/2012||3.1554 | |||
|- | |||
| PVOH(22K)+0.8wt% GA+100%CEC crosslinked prepared 10/3/2012||0.3478 | |||
|- | |||
| PVOH(22K)+1mL GA+50% CEC crosslinked prepared 10/4/2012||0.9595 | |||
|- | |||
| PVOH(22K)+0.5mL GA+NaMT crosslinked prepared 10/19/2012||2.4191 | |||
|} | |||
==UV-vis== | |||
*Ran UV-vis on all prepared porphyrin solutions(including solutions with various salt additives) and solutions from crosslinking | |||
==Sodium Ion selective electrode== | |||
*The general protocol for ion selective electrodes was followed | |||
*The film which was used on 10/31/2012 for ion selective electrode was stored in deionized H<sub>2</sub>O was tested | |||
Results: | |||
{| {{table}} | |||
| align="center" style="background:#f0f0f0;"|'''Amount of H2O film stored in(mL)''' | |||
| align="center" style="background:#f0f0f0;"|49.8 | |||
|- | |||
| '''ISE values(mV)'''||-96.1 | |||
|- | |||
| '''Conductivity(μS/cm)'''||70.2 | |||
|} | |||
<br> | |||
Notes: | |||
*Appears that there is a higher concentration than from 15ppm Cu<sup>2+</sup> measured on [[User:Moira_M._Esson/Notebook/CHEM-581/2012/10/03|2012/10/03]] | |||
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Revision as of 19:22, 10 November 2012
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Objectives
Furfural FilmsGeneral Protocol for rinsing of furfural films:
Observations:
FTIR
Ran films:
FTIR Images from previous runs:
Prepared films:
UV-vis
Sodium Ion selective electrode
Results:
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