2
0
2017
fu
wan
1
journal
Original
Fu, D.[Dong]
Wang, L.[LeMeng]
Tian, X.[XiangFeng]
J. Chem. Thermodyn.
2017
2020-09-29
Surface thermodynamics of DMA2P, DMA2P-MEA and DMA2P-PZ aqueous solutions
The surface tension (c) of 1-dimethylamino-2-propanol (DMA2P), DMA2P-monoethanolamine (MEA), and DMA2P-piperazine (PZ) aqueous solutions was measured by using the BZY-1 surface tension meter. The temperature ranged from 303.2 K to 323.2 K. The mass fractions of DMA2P, MEA and PZ respectively ranged from 0.30 to 0.50, 0.05 to 0.15 and 0.025 to 0.075. An equation was proposed to model the surface tension and the calculated results agreed well with the experiments. The surface thermodynamics including surface enthalpy and surface entropy were determined and their concentration dependence was analysed.
Surface tension
Surface thermodynamics
DMA2P
MEA
PZ
10.1016/j.jct.2016.12.022
107
79-84
1
InChI=1S/C5H13NO/c1-5(7)4-6(2)3/h5,7H,4H2,1-3H3
NCXUNZWLEYGQAH-UHFFFAOYSA-N
1-(dimethylamino)-2-propanol
(+-)-1-(dimethylamino)-2-propanol
DL-1-(dimethylamino)-2-propanol
C5H13NO
1
Commercial source
1
98
3
Stated by supplier
2
0.06
1
Karl Fischer titration
2
InChI=1S/C2H7NO/c3-1-2-4/h4H,1-3H2
HZAXFHJVJLSVMW-UHFFFAOYSA-N
2-aminoethan-1-ol
2-aminoethanol
MEA
ethanolamine
monoethanolamine
C2H7NO
1
Commercial source
1
99.5
3
Stated by supplier
2
0.06
1
Karl Fischer titration
3
InChI=1S/C4H10N2/c1-2-6-4-3-5-1/h5-6H,1-4H2
GLUUGHFHXGJENI-UHFFFAOYSA-N
piperazine
diethylenediamine
hexahydro-1,4-diazine
hexahydropyrazine
C4H10N2
1
Commercial source
1
99.5
3
Stated by supplier
2
0.05
1
Karl Fischer titration
4
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.9
3
Estimated by the compiler
1
1
1
Principal objective of the work
AB
TRC
8/16/2017
1
Surface tension liquid-gas, N/m
Wilhemy plate method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Air at 1 atmosphere
1
Temperature, K
Liquid
1
303.2
4
1
0.024
3
1
0.0004
1
313.2
4
1
0.0227
3
1
0.0004
1
323.2
4
1
0.0214
3
1
0.0004
2
4
1
Principal objective of the work
AB
TRC
8/16/2017
1
Surface tension liquid-gas, N/m
Wilhemy plate method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Air at 1 atmosphere
1
Temperature, K
Liquid
1
298.2
4
1
0.0719
3
1
0.0003
3
1
1
4
1
Principal objective of the work
AB
TRC
8/16/2017
1
Surface tension liquid-gas, N/m
Wilhemy plate method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Air at 1 atmosphere
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
1
303.2
4
2
0.1
3
1
0.0451
3
1
0.0006
1
303.2
4
2
0.2
3
1
0.0399
3
1
0.0006
1
303.2
4
2
0.3
3
1
0.0362
3
1
0.0005
1
303.2
4
2
0.4
3
1
0.0336
3
1
0.0004
1
303.2
4
2
0.5
3
1
0.0316
3
1
0.0004
1
303.2
4
2
0.6
3
1
0.0298
3
1
0.0004
1
303.2
4
2
0.7
3
1
0.0284
3
1
0.0004
1
303.2
4
2
0.8
3
1
0.0271
3
1
0.0004
1
303.2
4
2
0.9
3
1
0.0259
3
1
0.0004
1
303.2
4
2
1
4
1
0.024
3
1
0.0004
1
313.2
4
2
0.1
3
1
0.0434
3
1
0.0006
1
313.2
4
2
0.2
3
1
0.0378
3
1
0.0005
1
313.2
4
2
0.3
3
1
0.0346
3
1
0.0004
1
313.2
4
2
0.4
3
1
0.0323
3
1
0.0004
1
313.2
4
2
0.5
3
1
0.0304
3
1
0.0004
1
313.2
4
2
0.6
3
1
0.0288
3
1
0.0004
1
313.2
4
2
0.7
3
1
0.0273
3
1
0.0004
1
313.2
4
2
0.8
3
1
0.026
3
1
0.0004
1
313.2
4
2
0.9
3
1
0.0246
3
1
0.0004
1
313.2
4
2
1
4
1
0.0227
3
1
0.0004
1
323.2
4
2
0.1
3
1
0.0419
3
1
0.0007
1
323.2
4
2
0.2
3
1
0.0362
3
1
0.0005
1
323.2
4
2
0.3
3
1
0.0332
3
1
0.0004
1
323.2
4
2
0.4
3
1
0.0308
3
1
0.0004
1
323.2
4
2
0.5
3
1
0.0291
3
1
0.0004
1
323.2
4
2
0.6
3
1
0.0274
3
1
0.0004
1
323.2
4
2
0.7
3
1
0.0262
3
1
0.0004
1
323.2
4
2
0.8
3
1
0.0246
3
1
0.0004
1
323.2
4
2
0.9
3
1
0.0235
3
1
0.0004
1
323.2
4
2
1
4
1
0.0214
3
1
0.0004
4
1
1
2
1
4
1
Principal objective of the work
AB
TRC
8/16/2017
1
Surface tension liquid-gas, N/m
Wilhemy plate method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Air at 1 atmosphere
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Mass fraction
2
Liquid
1
303.2
4
2
0.3
3
3
0.05
2
1
0.0356
3
1
0.0004
1
303.2
4
2
0.3
3
3
0.1
3
1
0.0353
3
1
0.0004
1
303.2
4
2
0.3
3
3
0.15
3
1
0.035
3
1
0.0004
1
303.2
4
2
0.4
3
3
0.05
2
1
0.0329
3
1
0.0004
1
303.2
4
2
0.4
3
3
0.1
3
1
0.0326
3
1
0.0004
1
303.2
4
2
0.4
3
3
0.15
3
1
0.0322
3
1
0.0004
1
303.2
4
2
0.5
3
3
0.05
2
1
0.031
3
1
0.0004
1
303.2
4
2
0.5
3
3
0.1
3
1
0.0306
3
1
0.0004
1
303.2
4
2
0.5
3
3
0.15
3
1
0.0301
3
1
0.0004
1
313.2
4
2
0.3
3
3
0.05
2
1
0.0342
3
1
0.0004
1
313.2
4
2
0.3
3
3
0.1
3
1
0.0339
3
1
0.0004
1
313.2
4
2
0.3
3
3
0.15
3
1
0.0336
3
1
0.0004
1
313.2
4
2
0.4
3
3
0.05
2
1
0.0318
3
1
0.0004
1
313.2
4
2
0.4
3
3
0.1
3
1
0.0315
3
1
0.0004
1
313.2
4
2
0.4
3
3
0.15
3
1
0.0311
3
1
0.0004
1
313.2
4
2
0.5
3
3
0.05
2
1
0.0299
3
1
0.0004
1
313.2
4
2
0.5
3
3
0.1
3
1
0.0295
3
1
0.0004
1
313.2
4
2
0.5
3
3
0.15
3
1
0.0291
3
1
0.0004
1
323.2
4
2
0.3
3
3
0.05
2
1
0.0329
3
1
0.0004
1
323.2
4
2
0.3
3
3
0.1
3
1
0.0326
3
1
0.0004
1
323.2
4
2
0.3
3
3
0.15
3
1
0.0323
3
1
0.0004
1
323.2
4
2
0.4
3
3
0.05
2
1
0.0306
3
1
0.0004
1
323.2
4
2
0.4
3
3
0.1
3
1
0.0304
3
1
0.0004
1
323.2
4
2
0.4
3
3
0.15
3
1
0.03
3
1
0.0004
1
323.2
4
2
0.5
3
3
0.05
2
1
0.0289
3
1
0.0004
1
323.2
4
2
0.5
3
3
0.1
3
1
0.0285
3
1
0.0004
1
323.2
4
2
0.5
3
3
0.15
3
1
0.0281
3
1
0.0004
5
1
1
3
1
4
1
Principal objective of the work
AB
TRC
8/16/2017
1
Surface tension liquid-gas, N/m
Wilhemy plate method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Air at 1 atmosphere
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
3
Mass fraction
3
Liquid
1
303.2
4
2
0.3
3
3
0.025
2
1
0.0359
3
1
0.0004
1
303.2
4
2
0.3
3
3
0.05
2
1
0.0356
3
1
0.0004
1
303.2
4
2
0.3
3
3
0.075
2
1
0.0352
3
1
0.0004
1
303.2
4
2
0.4
3
3
0.025
2
1
0.0332
3
1
0.0004
1
303.2
4
2
0.4
3
3
0.05
2
1
0.0328
3
1
0.0004
1
303.2
4
2
0.4
3
3
0.075
2
1
0.0324
3
1
0.0004
1
303.2
4
2
0.5
3
3
0.025
2
1
0.0312
3
1
0.0004
1
303.2
4
2
0.5
3
3
0.05
2
1
0.0308
3
1
0.0004
1
303.2
4
2
0.5
3
3
0.075
2
1
0.0305
3
1
0.0004
1
313.2
4
2
0.3
3
3
0.025
2
1
0.0344
3
1
0.0004
1
313.2
4
2
0.3
3
3
0.05
2
1
0.0341
3
1
0.0004
1
313.2
4
2
0.3
3
3
0.075
2
1
0.0337
3
1
0.0004
1
313.2
4
2
0.4
3
3
0.025
2
1
0.0319
3
1
0.0004
1
313.2
4
2
0.4
3
3
0.05
2
1
0.0316
3
1
0.0004
1
313.2
4
2
0.4
3
3
0.075
2
1
0.0312
3
1
0.0004
1
313.2
4
2
0.5
3
3
0.025
2
1
0.03
3
1
0.0004
1
313.2
4
2
0.5
3
3
0.05
2
1
0.0297
3
1
0.0004
1
313.2
4
2
0.5
3
3
0.075
2
1
0.0294
3
1
0.0004
1
323.2
4
2
0.3
3
3
0.025
2
1
0.033
3
1
0.0004
1
323.2
4
2
0.3
3
3
0.05
2
1
0.0327
3
1
0.0004
1
323.2
4
2
0.3
3
3
0.075
2
1
0.0323
3
1
0.0004
1
323.2
4
2
0.4
3
3
0.025
2
1
0.0306
3
1
0.0004
1
323.2
4
2
0.4
3
3
0.05
2
1
0.0303
3
1
0.0004
1
323.2
4
2
0.4
3
3
0.075
2
1
0.03
3
1
0.0004
1
323.2
4
2
0.5
3
3
0.025
2
1
0.0288
3
1
0.0004
1
323.2
4
2
0.5
3
3
0.05
2
1
0.0285
3
1
0.0004
1
323.2
4
2
0.5
3
3
0.075
2
1
0.0282
3
1
0.0004