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1
Absorption of Ultrasonic Waves in Aqueous Binary Mixtures of alfa-Cyclodextrin and Some Amphiphilic Substances
Balcerzak A., Płowiec R., Kiełczyński P., Juszkiewicz A.
Molecular and Quantum Acoustics
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2002
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Vol. 23
15-25
2
Content available remote Ultrasonic investigations of aqueus solutions of α-cyclodextrin and amphiphil substances having different "heads" and identic "tails"
Balcerzak A., Płowiec R., Kiełczyński P., Juszkiewicz A.
Archives of Acoustics
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2002
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Vol. 27, no. 4
361-371
EN
Velocity and absorption of ultrasonic waves in aqueuos solutions of a-cyclodextrin containing amphiphil substances with different ``heads" and identic ``tails" were carried out. As a result of the mutual interactions between a-cyclodextrin and the amphiphil substance the low frequency ultrasonic relaxation process has been established. Thermodynamic and kinetic parameters related to this process have been calculated. Obtained results have been discussed considering molecular structure of the amphiphil substances.
3
Content available remote Investigations of ultrasonic velocity and absorption in aqueous solutions of [alpha]- and ß-cyclodextrin with sodium alkyl sulfates. Part 2. ß-cyclodextrin systems
Balcerzak A., Płowiec R., Juszkiewicz A.
Archives of Acoustics
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2001
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Vol. 26, no. 1
51-63
EN
In second part of this work, velocity and absorption measurements of ultrasonic waves in aqueous solutions of ß-cyclodextrin containing different sodium alkyl sulfates are reported. One or two relaxation processes for these solutions have been established. Thermodynamic and kinetic parameters related to these processes have been calculated. The results have been compared with those obtained for solutions of ?-cyclodextrin and presented in Part 1 of this paper. Explanation of the origins of these processes has been proposed.
4
Content available remote Investigations of ultrasonic velocity and absorption in aqueous solutions of [alpha]- and ß-cyclodextrin with sodium alkyl sulfates. Part 1. [alpha]-cyclodextrin systems
Balcerzak A., Płowiec R., Juszkiewicz A.
Archives of Acoustics
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2001
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Vol. 26, no. 1
37-52
EN
In this part, the velocity and absorption measurements of ultrasonic waves in aqueous solutions of [alpha]-cyclodextrin containing different sodium alkyl sulfates are reported. One or two relaxation processes for these solutions have been established. Thermodynamic and kinetic parameters related to these processes have been calculated. In the second part, experimental results for ß-cyclodextrin will be reported and compared with those presented here.
5
The Viscous Properties of Water
Płowiec R.
Molecular and Quantum Acoustics
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2000
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Vol. 21
191-200
6
Content available remote Longitudinal and shear ultrasonic measurements in vegetable oils
Płowiec R., Balcerzak A.
Archives of Acoustics
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2000
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Vol. 25, no. 3
377-385
EN
In this paper the results of ultrasonic longitudinal and shear measurements in vegetable oils are presented and discussed. The run of the ultrasonic attenuation suggests a relaxation process at frequencies below 0.5MHz. Another one is suggested at low temperature in the vicinity of 1Hz.
7
Molecular Relaiation Processes in Liquids
Płowiec R.
Molecular and Quantum Acoustics
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1999
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Vol. 20
181-193
8
Ultrasonic relaxation processes in aqueous systems of alfa-cyclodextrin and alkyltrimethylammonium bromides.
Balcerzak A., Płowiec R.
Molecular and Quantum Acoustics
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1998
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Vol. 19
11-17
9
Ultradźwiękowe badanie oleju rzepakowego
Płowiec R., Balcerzak A., Kurcok M.
Molecular and Quantum Acoustics
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1998
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Vol. 19
217-220
10
Content available remote Absorption of ultrasonic waves in aqueous solutions of ?-cyclodextrin with alkylpyridinium or alkyltrimethylammonium bromides
Balcerzak A., Płowiec R., Juszkiewicz A.
Archives of Acoustics
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1998
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Vol. 23, no. 3
411-428
EN
Measurements of the absorption coefficient, alfa/f2, of aqueous solutions of ?-cyclodextrin with alkylpyridinium bromides CnH2n+1C5H4NBr or alkyltrimethylammonium bromides CnH2n+1N(CH3)3Br (n=8, 10, 12), were carried out at 15, 25, 35 and 45oC in the concentration range 0.01M to 0.04M and frequency range 1MHz to 150MHz. The occurrence of two ultrasonic relaxation processes has been noted. The obtained results have been compared with data published previously for sodium alkyl sulfates.
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