scholarly journals Heat of mixing profile, complexation curve and spectroscopic investigation of binary mixtures containing bicyclic Brønsted superbase DBN with hydrogen ethanoate

2021 ◽  
pp. 106516
Author(s):  
Gordon W. Driver ◽  
Lisette J.M. Sprakel ◽  
Ilkka Kilpeläinen ◽  
Boelo Schuur
Keyword(s):  
Binary Mixtures ◽  
Spectroscopic Investigation ◽  
Heat Of Mixing

The Heat of Mixing for Binary Mixtures of Triethylamine with Alcohols

1961 ◽  
Vol 14 (4) ◽  
pp. 520 ◽  
Author(s):  
TJV Findlay
Keyword(s):  
Binary Mixtures ◽  
Vapour Pressure ◽  
Alcohol Molecule ◽  
Heat Of Mixing ◽  
Pressure Data ◽  
Calorimetric Measurements

Calorimetric measurements of the heat of mixing have been made at 25 �C and 40 �C for binary mixtures of triethylamine with methanol, and at 25 �C and 45 �C for binary mixtures of triethylamine with ethanol, n-propanol, and n-butanol. It is found that the heat of mixing for these systems becomes slightly less negative as the temperature is increased. However, apart from methanol, the size of the alcohol molecule has little effect on the heat of mixing. The results obtained are compared with those calculated from vapour pressure data in an earlier paper.

The Interaction between Rubber and Liquids. VI. Swelling and Solubility in Mixed Liquids

1945 ◽  
Vol 18 (2) ◽  
pp. 241-255 ◽  
Author(s):  
Geoffrey Gee
Keyword(s):  
Binary Mixtures ◽  
Cohesive Energy ◽  
Ternary Mixture ◽  
Heat Of Mixing ◽  
Research Association ◽  
Linear Polymers ◽  
Heats Of Mixing ◽  
Fundamental Research ◽  
Solvent Properties ◽  
Solvent Power

Abstract The equations derived in the previous paper for the osmotic equilibrium between a ternary mixture of polymer + two liquids and a mixture of the two liquids are applied to the swelling of cross-linked polymers in mixed liquids and to the solubility of linear polymers in mixed liquids. A mixed liquid has solvent properties intermediate between those of its components only when these mix ideally. The larger the heat of mixing of the liquids, the greater is the solvent power of the mixture relative to those of the components. This conclusion forms the basis of an explanation of the enhanced swelling of rubbers in pairs of dissimilar liquids and of the fact that a mixture of two nonsolvents may be a solvent over a certain range of concentration. Experimental results are given for the swelling of vulcanized rubbers and the critical solubility limits of unvulcanized rubbers. It is shown that these can be explained qualitatively from the cohesive energy densities of the three components, and semiquantitatively from the measured heats of mixing of the three binary mixtures. The work described in these two papers forms a part of the program of fundamental research on rubber undertaken by the Board of the British Rubber Producers' Research Association.

scholarly journals Heat of Mixing for Binary Mixtures: Pyridine Derivatives + Benzene, and +Cyclohexane Systems

1969 ◽  
Vol 42 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Takeshi Murakami ◽  
Sachio Murakami ◽  
Ryoichi Fujishiro
Keyword(s):  
Binary Mixtures ◽  
Heat Of Mixing ◽  
Pyridine Derivatives

Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

1965 ◽  
Vol 5 ◽  
pp. 120-130
Author(s):  
T. S. Galkina
Keyword(s):  
Spectroscopic Study ◽  
Spectral Type ◽  
Spectroscopic Investigation ◽  
Binary Systems ◽  
Quantitative Information ◽  
Close Binary ◽  
Physical Parameters ◽  
Absorption And Emission ◽  
Close Binary Systems ◽  
Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

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