User:Melissa Novy/Notebook/CHEM-581/2012/11/20 - Revision history

Melissa Novy: /* UV-Vis of Salt-Exchanged PVOH Films */

2012-11-26T02:49:59Z

UV-Vis of Salt-Exchanged PVOH Films

←Older revision		Revision as of 02:49, 26 November 2012
Line 25:		Line 25:
	*# Place the film back in its H<sub>2</sub>SO<sub>4</sub> solution.		*# Place the film back in its H<sub>2</sub>SO<sub>4</sub> solution.
	*# Discard the salt solution into a waste container.		*# Discard the salt solution into a waste container.
-	*# Repeat the above steps in 20 mL solutions of Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and Na<sub>2</sub>SO<sub>4</sub>.	+	*# Repeat the above steps in 20 mL solutions of 10 mM Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and 10 mM Na<sub>2</sub>SO<sub>4</sub>.
	* The following films were analyzed with this protocol:		* The following films were analyzed with this protocol:
	** PVOH(22K) 1.0067 g + 1 mL GA + 1 mL PP + HCl		** PVOH(22K) 1.0067 g + 1 mL GA + 1 mL PP + HCl

Melissa Novy at 02:48, 26 November 2012

2012-11-26T02:48:24Z

←Older revision		Revision as of 02:48, 26 November 2012
Line 34:		Line 34:
	<br>		<br>
	{\| {{table}}		{\| {{table}}
-	\| align="center" style="background:#f0f0f0;"\|'''Film [ ]'''	+	\| align="center" style="background:#f0f0f0;"\|'''Film []'''
-	\| align="center" style="background:#f0f0f0;"\|'''Salt Solution [ ]'''	+	\| align="center" style="background:#f0f0f0;"\|'''Salt Solution []'''
	\| align="center" style="background:#f0f0f0;"\|'''Film Thickness [mm]'''		\| align="center" style="background:#f0f0f0;"\|'''Film Thickness [mm]'''
-	\| align="center" style="background:#f0f0f0;"\|'''Color [ ]'''	+	\| align="center" style="background:#f0f0f0;"\|'''Color []'''
		+	\| align="center" style="background:#f0f0f0;"\|'''Time in Solution [min]'''
	\|-		\|-
-	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|~~Al<sub>2</sub>~~(~~SO<sub>4</sub>~~)~~<sub>~~3~~</sub>~~\|\|0.6\|\|Green	+	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|Al2(SO4)3\|\|0.6\|\|Green\|\|174
	\|-		\|-
-	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|~~Na<sub>2</sub>SO<sub>4</sub>~~\|\|0.5\|\|Pink	+	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|Na2SO4\|\|0.5\|\|Pink\|\|189
	\|-		\|-
-	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|~~Fe<sub>2</sub>~~(~~SO<sub>4</sub>~~)~~<sub>~~3~~</sub>~~\|\|0.6\|\|Pink	+	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|Fe2(SO4)3\|\|0.6\|\|Pink\|\|189
	\|-		\|-
-	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|~~Al<sub>2</sub>~~(~~SO<sub>4</sub>~~)~~<sub>~~3~~</sub>~~\|\|0.6\|\|Transparent	+	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|Al2(SO4)3\|\|0.6\|\|Transparent\|\|135
	\|-		\|-
-	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|~~Na<sub>2</sub>SO<sub>4</sub>~~\|\|0.1\|\|Transparent	+	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|Na2SO4\|\|0.1\|\|Transparent\|\|135
	\|-		\|-
-	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|~~Fe<sub>2</sub>~~(~~SO<sub>4</sub>~~)~~<sub>~~3~~</sub>~~\|\|0.4\|\|Transparent	+	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|Fe2(SO4)3\|\|0.4\|\|Transparent\|\|135
	\|-		\|-
-	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|~~Al<sub>2</sub>~~(~~SO<sub>4</sub>~~)~~<sub>~~3~~</sub>~~\|\|0.9\|\|Green	+	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|Al2(SO4)3\|\|0.9\|\|Green\|\|152
	\|-		\|-
-	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|~~Na<sub>2</sub>SO<sub>4</sub>~~\|\|1\|\|Pink	+	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|Na2SO4\|\|1\|\|Pink\|\|160
	\|-		\|-
-	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|~~Fe<sub>2</sub>~~(~~SO<sub>4</sub>~~)~~<sub>~~3~~</sub>~~\|\|0.9\|\|Pink	+	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|Fe2(SO4)3\|\|0.9\|\|Pink\|\|162
	\|}		\|}
-	~~<br>~~<br>	+	<br>
	[[Image:PVOH%2822K%29_1mLGA%2C_1mLPP%2C_HCl.jpg]]		[[Image:PVOH%2822K%29_1mLGA%2C_1mLPP%2C_HCl.jpg]]
	<br><br>		<br><br>
	[[Image:PVOH%2822K%29_1mLGA%2C_1mLPP.jpg]]		[[Image:PVOH%2822K%29_1mLGA%2C_1mLPP.jpg]]
		+	<br><br>
		+	* In all spectra, a peak at around 420 nm is visible. Based on spectra of porphine in the salt solutions alone, it is likely that this peak is due to the presence of porphine in the films. The peak absorbance at 420 had the highest value for films soaked in 10 mM Na<sub>2</sub>SO<sub>4</sub>, while the peak absorbance was the lowest for films soaked in Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>. This corresponds to the fact that all films soaked in the latter solution remained green in color and did not become pink, even after soaking for several hours.
	<!-- ##### DO NOT edit below this line unless you know what you are doing. ##### -->		<!-- ##### DO NOT edit below this line unless you know what you are doing. ##### -->


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Melissa Novy: /* UV-Vis of Salt-Exchanged PVOH Films */

2012-11-26T02:13:38Z

UV-Vis of Salt-Exchanged PVOH Films

←Older revision		Revision as of 02:13, 26 November 2012
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	** PVOH(22K) 1.0073 g + 1 mL GA + 1 mL PP		** PVOH(22K) 1.0073 g + 1 mL GA + 1 mL PP
	** PVOH(22K) 1.05225 g + 0.5 mL GA + 1 mL PP		** PVOH(22K) 1.05225 g + 0.5 mL GA + 1 mL PP
-	* Note that all films were stored in H<sub>2</sub>SO<sub>4</sub> solution prior to being soaked in the salt solutions.	+	* Note that all films were stored in 2 wt% H<sub>2</sub>SO<sub>4</sub> solution prior to being soaked in the salt solutions.
	* Immediately after being placed in the three salt solutions, the PVOH(22K) 1.05225 g + 0.5 mL GA + 1 mL PP films became colorless.		* Immediately after being placed in the three salt solutions, the PVOH(22K) 1.05225 g + 0.5 mL GA + 1 mL PP films became colorless.
		+	<br>
		+	{\| {{table}}
		+	\| align="center" style="background:#f0f0f0;"\|'''Film [ ]'''
		+	\| align="center" style="background:#f0f0f0;"\|'''Salt Solution [ ]'''
		+	\| align="center" style="background:#f0f0f0;"\|'''Film Thickness [mm]'''
		+	\| align="center" style="background:#f0f0f0;"\|'''Color [ ]'''
		+	\|-
		+	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>\|\|0.6\|\|Green
		+	\|-
		+	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|Na<sub>2</sub>SO<sub>4</sub>\|\|0.5\|\|Pink
		+	\|-
		+	\| PVOH(22K) 1.0073g, 1mLGA, 1mLPP\|\|Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>\|\|0.6\|\|Pink
		+	\|-
		+	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>\|\|0.6\|\|Transparent
		+	\|-
		+	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|Na<sub>2</sub>SO<sub>4</sub>\|\|0.1\|\|Transparent
		+	\|-
		+	\| PVOH(22K) 1.05225g, 0.5mLGA, 1mLPP\|\|Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>\|\|0.4\|\|Transparent
		+	\|-
		+	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>\|\|0.9\|\|Green
		+	\|-
		+	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|Na<sub>2</sub>SO<sub>4</sub>\|\|1\|\|Pink
		+	\|-
		+	\| PVOH(22K) 1.0067g, 1mLGA, 1mLPP, HCl\|\|Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>\|\|0.9\|\|Pink
		+	\|}
		+	<br><br>
		+	[[Image:PVOH%2822K%29_1mLGA%2C_1mLPP%2C_HCl.jpg]]
		+	<br><br>
		+	[[Image:PVOH%2822K%29_1mLGA%2C_1mLPP.jpg]]
		+	<!-- ##### DO NOT edit below this line unless you know what you are doing. ##### -->

-
-	~~<!-- ##### DO NOT edit below this line unless you know what you are doing. ##### -->~~
-	\|}

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Melissa Novy at 00:33, 25 November 2012

2012-11-25T00:33:50Z

←Older revision		Revision as of 00:33, 25 November 2012
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	<!-- ##### DO NOT edit above this line unless you know what you are doing. ##### -->		<!-- ##### DO NOT edit above this line unless you know what you are doing. ##### -->
-	==~~Entry title~~==	+	==Objectives==
-	* ~~Insert content here~~...	+	* Run UV-vis on salt-exchanged PVOH(22K) + GA + PP films.
		+
		+	==UV-Vis of Salt-Exchanged PVOH Films==
		+	* Protocol
		+	*# Place film in 20 mL 10 mM Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>.
		+	*# Time how long it takes for the film to change color from green to pink.
		+	*# Remove film from salt solution, pat dry with KimWipes, and cut with a 3.5 mm film cutter.
		+	*# Measure the thickness of the film with calipers, then place it in a quartz cuvette and take a spectrum from 200 nm to 800 nm.
		+	*# Place the film back in its H<sub>2</sub>SO<sub>4</sub> solution.
		+	*# Discard the salt solution into a waste container.
		+	*# Repeat the above steps in 20 mL solutions of Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and Na<sub>2</sub>SO<sub>4</sub>.
		+	* The following films were analyzed with this protocol:
		+	** PVOH(22K) 1.0067 g + 1 mL GA + 1 mL PP + HCl
		+	** PVOH(22K) 1.0073 g + 1 mL GA + 1 mL PP
		+	** PVOH(22K) 1.05225 g + 0.5 mL GA + 1 mL PP
		+	* Note that all films were stored in H<sub>2</sub>SO<sub>4</sub> solution prior to being soaked in the salt solutions.
		+	* Immediately after being placed in the three salt solutions, the PVOH(22K) 1.05225 g + 0.5 mL GA + 1 mL PP films became colorless.

Melissa Novy: Autocreate 2012/11/20 Entry for User:Melissa_Novy/Notebook/CHEM-581

2012-11-25T00:25:25Z

Autocreate 2012/11/20 Entry for User:Melissa_Novy/Notebook/CHEM-581

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