DSC 热分析方法简介

10LEDO STAR e System
^exo
Interpretation DSC 2
16.11.2000 17:43:26
Diagram 2
White powder
Wg^-1 -0.025 5 mW
-0.030 299.5 300.0 300.5 °C
292
MSG MT: G. Widmann
4/6
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METTLER TOLEDO
DSC Curve Interpretation
^exo Interpretation DSC 10 17.11.2000 12:23:34
Diagram 10
Opaque film
Atmosphere: Air 10 mW
50
DEMO Version
5/6
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METTLER TOLEDO
DSC Curve Interpretation
^exo Interpretation DSC 13 17.11.2000 13:02:27
Diagram 13
Transparent plastic
1 mW
First Heating
Second Heating
^exo
Interpretation DSC 5
16.11.2000 16:03:53
Diagram 5
White powder
5 mW
Heating
m = 0.43 mg 157.5 J/g 5 K/min
156.8 J/g -5 K/min Cooling
130
DEMO Version
135
140
150
200
250
300
350
°C
METTLER TOLEDO STARe System
DSC curve interpretation.doc
6/6
28.09.01/GW
Pan hermetically sealed Integral -174.83 mJ normalized -51.42 Jg^-1 Peak 178.44 °C 120
DEMO Version
140
160
180
°C
METTLER TOLEDO STARe System
^exo
Interpretation DSC 9
Write down the effects on the curves and try to find out what each substance is.
DSC curve interpretation.doc
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METTLER TOLEDO
DSC Curve Interpretation
^exo
Interpretation DSC 12
17.11.2000 12:50:39
Diagram 12
Transparent plastic
10 mW
40
DEMO Version
60
80
100
120
140
160
180 °C
METTLER TOLEDO STAR e System
DSC curve interpretation.doc
DEMO Version
50
100
150
200
°C
METTLER TOLEDO STAR e System
^exo
Interpretation DSC 15
17.11.2000 14:03:52
Diagram 15
White film
5 mW 40 ul Al pan, sealed
100
MSG MT: G. Widmann
METTLER TOLEDO
DSC Curve Interpretation
Interpretation of DSC curves
Practice:
The 15 diagrams on the next pages include the following effects: § § § § § § § § § § § melting crystallization, cold crystallization evaporation, vaporization, drying solid-solid transition polymorphic transitions via the liquid phase glass transition oxidation curing, polymerization, polyaddition decomposition initial deflection artifact, mechanical disturbances
10 mW
120
130
140
150
160
170
180
190
°C
MSG MT: G. Widmann
METTLER TOLEDO STAR e System
DSC curve interpretation.doc
2/6
28.09.01/GW
METTLER TOLEDO
DSC Curve Interpretation
MSG MT: G. Widmann
-40
-20
0
20
40 °C
METTLER TOLEDO STARe System
^exo
Interpretation DSC 8
17.11.2000 11:38:28
Diagram 8
White powder
1 Wg^-1
Lid pierced Integral -268.26 mJ normalized -50.95 Jg^-1 Peak 194.03 °C
^exo Interpretation DSC 1 10.11.2000 16:24:42
Diagram 1
Clear liquid
mW 0
-20 -40 -60
Integral -11.62e+03 mJ normalized -2323.51 Jg^-1
-80 40
DEMO Version
60
80
100
150
200
°C
METTLER TOLEDO STAR e System
^exo
Interpretation DSC 11
17.11.2000 12:35:36
Diagram 11
Yellowish plastic
10 mW
50
DEMO Version
100
150
200
250
e
°C
METTLER TOLEDO STAR System
^exo Interpretation DSC 4 10.11.2000 17:33:34
Diagram 4
White powder, heated to 200 °C and shock cooled to ambient
5 mW
40
DEMO Version
50
60
70
80
90
100
110 °C
METTLER TOLEDO STAR e System
145
°C
METTLER TOLEDO STAR e System
^exo
Interpretation DSC 6
26.04.2001 09:00:22
Diagram 6
Chemical element
Integral -102.71 mJ normalized -12.26 Jg^-1 Onset 103.59 °C
5 mW
Integral -412.33 mJ normalized -49.22 Jg^-1 Onset 115.85 °C
60
70
80
90
100
110
120
130
°C
MSG MT: G. Widmann
METTLER TOLEDO STAR e System
DSC curve interpretation.doc
3/6
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METTLER TOLEDO
DSC Curve Interpretation
^exo Interpretation DSC 7 26.04.2001 08:59:32
Diagram 7
Viscous liquid (at ambient temperature)
mW
-5 Integral -1036.60 mJ normalized -55.14 Jg^-1 -10 -60
294
296
298
300
302
304
306
308 °C
METTLER TOLEDO STARe System
^exo
Interpretation DSC 3
10.11.2000 17:31:50
Diagram 3
White powder, heated to 200 °C and shock cooled to ambient
20
DEMO Version
40
60
80
100
120
140
°C
METTLER TOLEDO STAR e System
^exo
Interpretation DSC 14
17.11.2000 13:19:23
Diagram 14
Viscous liquid
2 mW First run
Second run 0
17.11.2000 13:34:24
Diagram 9
Headache pill ground in mortar
5 mW Weight loss 30%!
50 0
DEMO Version
100 10 20
150 30
200
°C min
METTLER TOLEDO STAR e System
DSC curve interpretation.doc