User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/09/07 - Revision history

Elizabeth Ghias at 03:03, 26 November 2012

Elizabeth Ghias — Mon, 26 Nov 2012 03:03:52 GMT

←Older revision		Revision as of 03:03, 26 November 2012
Line 57:		Line 57:
	==Data==		==Data==

-	<Differential Scanning Calorimetry</u>	+	<u>Differential Scanning Calorimetry</u>

	Trial 1 (Film 1) - mass of pan and lid = 0.05002 g, mass of pan and lid with material = 0.05285 g		Trial 1 (Film 1) - mass of pan and lid = 0.05002 g, mass of pan and lid with material = 0.05285 g

Elizabeth Ghias at 14:46, 24 October 2012

Elizabeth Ghias — Wed, 24 Oct 2012 14:46:01 GMT

←Older revision		Revision as of 14:46, 24 October 2012
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	* The hot plate used to evaporate the excess water from the films made on Wednesday was too hot and thus, bubbling was observed in the films. We will remake the films on Monday.		* The hot plate used to evaporate the excess water from the films made on Wednesday was too hot and thus, bubbling was observed in the films. We will remake the films on Monday.

-
-	Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.
-
-	~~[[Category:Course]]~~
-	~~[[Category:Miscellaneous]]~~

Elizabeth Ghias at 20:34, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 20:34:33 GMT

←Older revision		Revision as of 20:34, 10 September 2012
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	* The color change from clear to black is the result of the crosslinking that occurred in the presence of the acid.		* The color change from clear to black is the result of the crosslinking that occurred in the presence of the acid.
	* Film 7 remained the same because a weak acid was added, not a strong acid.		* Film 7 remained the same because a weak acid was added, not a strong acid.
-	* The films ~~that were~~	+	* The hot plate used to evaporate the excess water from the films made on Wednesday was too hot and thus, bubbling was observed in the films. We will remake the films on Monday.

Elizabeth Ghias at 20:33, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 20:33:39 GMT

←Older revision		Revision as of 20:33, 10 September 2012
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	==Objective==		==Objective==

-	To conduct Differential Scanning Calorimetry ~~and~~ to complete the cross-linking reactions conducted last week.	+	To conduct Differential Scanning Calorimetry, to complete the cross-linking reactions conducted last week, and to finish evaporating water from the two films made on Wednesday.


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	0.2 g of Films 2,4,5,6, and 7 (See below for list of films) were placed into an oven set to 90°C for 90 minutes.		0.2 g of Films 2,4,5,6, and 7 (See below for list of films) were placed into an oven set to 90°C for 90 minutes.
		+
		+
		+	<u>Evaporation of Films made on 9/5</u>
		+
		+	* The films made on Wednesday were placed on a hot plate to allow excess water left in the films to evaporate.
		+	** One film contained 0.5014 g PVA (MW = 22,000) in 5 mL water, with 0.0554 g succinic acid and 3 drops of phosphoric acid
		+	** The other film consisted of 0.5067 g PVA (MW = 22,000) in 5 mL water, with 0.0562 g maleic acid and 3 drops of phosphoric acid


Line 74:		Line 81:
	* The color change from clear to black is the result of the crosslinking that occurred in the presence of the acid.		* The color change from clear to black is the result of the crosslinking that occurred in the presence of the acid.
	* Film 7 remained the same because a weak acid was added, not a strong acid.		* Film 7 remained the same because a weak acid was added, not a strong acid.
		+	* The films that were

Elizabeth Ghias at 20:27, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 20:27:48 GMT

←Older revision		Revision as of 20:27, 10 September 2012
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	Trial 3 (Film 5) - mass of pan and lid = 0.04880 g, mass of pan and lid with material = 0.05132 g		Trial 3 (Film 5) - mass of pan and lid = 0.04880 g, mass of pan and lid with material = 0.05132 g
		+
		+
		+	<u>Crosslinking Reactions</u>
		+
		+	After 90 minutes in the oven:
		+
		+	* Film 2 - color remained the same, film became harder/more brittle
		+	* Film 4 - color changed from clear to black/red depending on the thickness of the film. Thicker portions of the film were darker than thinner parts, which appeared red. The black parts of the film were very hard, while the thinner parts of the film were more flexible.
		+	* Film 5 - color changed from clear to black, film became harder/more brittle
		+	* Film 6 - color changed from clear to black, film became harder/more brittle
		+	* Film 7 - Film remained the same


	==Notes==		==Notes==
-	~~This area~~ is ~~for any observations or conclusions~~ that ~~you would like to note~~.	+
		+	* The color change from clear to black is the result of the crosslinking that occurred in the presence of the acid.
		+	* Film 7 remained the same because a weak acid was added, not a strong acid.

Elizabeth Ghias at 20:16, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 20:16:01 GMT

←Older revision		Revision as of 20:16, 10 September 2012
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	# The masses of three DSC pans and lids were measured.		# The masses of three DSC pans and lids were measured.
-	# 3 ± 0.3 mg of film (Films 1, 3, and 5 were used) were added to each pan.	+	# 3 ± 0.3 mg of film (Films 1, 3, and 5 were used, see below) were added to each pan.
	# Each pan and lid were placed into the press.		# Each pan and lid were placed into the press.
	# The three samples were placed into the DSC in spaces 6,7, and 8.		# The three samples were placed into the DSC in spaces 6,7, and 8.
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	<u>Crosslinking Reactions</u>		<u>Crosslinking Reactions</u>

-	0.2 g of Films 2,4,5,6, and 7 were placed into an oven set to 90°C for 90 minutes.	+	0.2 g of Films 2,4,5,6, and 7 (See below for list of films) were placed into an oven set to 90°C for 90 minutes.


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	* Film 1 = 0.5110 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, no acid		* Film 1 = 0.5110 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, no acid
-	* Film 2 =	+	* Film 2 = 1.0084 g PVA (MW = 22,000) in 6 mL H<sub>2</sub>O, no acid
-	* Film 3 =	+	* Film 3 = 0.5078 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, with 3 drops of HCl
-	* Film 4 =	+	* Film 4 = 1.0044 g PVA (MW = 22,000) in 6 mL H<sub>2</sub>O, with 3 drops of HCl
-	* Film 5 =	+	* Film 5 = 0.5066 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, with 0.05 g succinic acid and 3 drops of HCl
-	* Film 6 =	+	* Film 6 = 0.50 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, with 0.05 g Maleic acid and 3 drops of HCl
-	* Film 7 =	+	* Film 7 = 1.0010 g PVA (MW = 22,000) in 6 mL H<sub>2</sub>O, with 3 drops of phosphoric acid
-	* Film 8 =	+	* Film 8 = 0.5053 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, with 3 drops of phosphoric acid

Elizabeth Ghias at 20:10, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 20:10:30 GMT

←Older revision		Revision as of 20:10, 10 September 2012
Line 54:		Line 54:
	Trial 1 (Film 1) - mass of pan and lid = 0.05002 g, mass of pan and lid with material = 0.05285 g		Trial 1 (Film 1) - mass of pan and lid = 0.05002 g, mass of pan and lid with material = 0.05285 g

-	Trial 2 (Film 3) - mass of pan and lid = 0.04993 g, mass of pan and lid with material = 0.0	+	Trial 2 (Film 3) - mass of pan and lid = 0.04993 g, mass of pan and lid with material = 0.05317 g

-	Trial 3 (Film 5) -	+	Trial 3 (Film 5) - mass of pan and lid = 0.04880 g, mass of pan and lid with material = 0.05132 g

Elizabeth Ghias at 20:02, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 20:02:08 GMT

←Older revision		Revision as of 20:02, 10 September 2012
Line 37:		Line 37:
	<u>List of Films</u>		<u>List of Films</u>

-	* Film 1 =	+	* Film 1 = 0.5110 g PVA (MW = 22,000) in 3 mL H<sub>2</sub>O, no acid
	* Film 2 =		* Film 2 =
	* Film 3 =		* Film 3 =

Elizabeth Ghias at 19:54, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 19:54:43 GMT

←Older revision		Revision as of 19:54, 10 September 2012
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	# Each pan and lid were placed into the press.		# Each pan and lid were placed into the press.
	# The three samples were placed into the DSC in spaces 6,7, and 8.		# The three samples were placed into the DSC in spaces 6,7, and 8.
-	# The DSC was run for the three trials with the following program:	+	# The DSC was run for the each of the three trials with the following program:
	## Equilibrate (20.00°C)		## Equilibrate (20.00°C)
	## Ramp (20°C/min to 240°C/min)		## Ramp (20°C/min to 240°C/min)
Line 30:		Line 30:


		+	<u>Crosslinking Reactions</u>

		+	0.2 g of Films 2,4,5,6, and 7 were placed into an oven set to 90°C for 90 minutes.
		+
		+
		+	<u>List of Films</u>
		+
		+	* Film 1 =
		+	* Film 2 =
		+	* Film 3 =
		+	* Film 4 =
		+	* Film 5 =
		+	* Film 6 =
		+	* Film 7 =
		+	* Film 8 =



	==Data==		==Data==
-	* Add data and ~~results here~~...	+
		+	<Differential Scanning Calorimetry</u>
		+
		+	Trial 1 (Film 1) - mass of pan and lid = 0.05002 g, mass of pan and lid with material = 0.05285 g
		+
		+	Trial 2 (Film 3) - mass of pan and lid = 0.04993 g, mass of pan and lid with material = 0.0
		+
		+	Trial 3 (Film 5) -
		+

	==Notes==		==Notes==

Elizabeth Ghias at 19:49, 10 September 2012

Elizabeth Ghias — Mon, 10 Sep 2012 19:49:52 GMT

←Older revision		Revision as of 19:49, 10 September 2012
Line 10:		Line 10:

	==Objective==		==Objective==
		+
		+	To conduct Differential Scanning Calorimetry and to complete the cross-linking reactions conducted last week.
		+

	==Description==		==Description==
		+
		+	<u>Differential Scanning Calorimetry</u>
		+
		+	# The masses of three DSC pans and lids were measured.
		+	# 3 ± 0.3 mg of film (Films 1, 3, and 5 were used) were added to each pan.
		+	# Each pan and lid were placed into the press.
		+	# The three samples were placed into the DSC in spaces 6,7, and 8.
		+	# The DSC was run for the three trials with the following program:
		+	## Equilibrate (20.00°C)
		+	## Ramp (20°C/min to 240°C/min)
		+	## Ramp (20°C/min to 20°C/min)
		+	## Isothermal (5 minutes)
		+	## Repeat steps 2 to 4
		+
		+
		+
		+
		+

	==Data==		==Data==