Cononsolvency in the ‘drunken’ state: the thermoresponsiveness of a new acrylamide copolymer in water–alcohol mixtures

2017 ◽  
Vol 8 (7) ◽  
pp. 1196-1205 ◽  
Author(s):  
Niklas Lucht ◽  
Steffen Eggers ◽  
Volker Abetz
Keyword(s):  
Alcohol Water ◽  
Alcohol Mixtures ◽  
Water Alcohol

This work presents the synthesis and thermoresponsiveness of a random acrylamide copolymer in alcohol–water mixtures and discusses cononsolvency phenomena.

Dissolution enthalpy of NaI in water–alcohol mixtures at 288.15 and 308.15 K. Enthalpy of interaction in electrolyte–alcohol–water systems

1984 ◽  
Vol 62 (5) ◽  
pp. 856-859 ◽  
Author(s):  
Henryk Piekarski ◽  
Alina Piekarska ◽  
Stefania Taniewska-Osińska
Keyword(s):  
Mixed Solvent ◽  
Pair Interaction ◽  
Water Systems ◽  
Effect Of Temperature ◽  
Solvent Concentration ◽  
Interaction Coefficients ◽  
Enthalpic Pair Interaction Coefficients ◽  
Alcohol Water ◽  
Alcohol Mixtures ◽  
Water Alcohol

The enthalpy of NaI solution was determined in water mixtures with methanol, ethanol, propanol, and isopropanol in the entire range of mixed-solvent concentration at 288.15 and 308.15 K, and in water mixtures with s-butanol and tert-butanol in the range of 0–5 mol% alcohol at 308.15 K. The dependence of [Formula: see text] on solvent composition was studied. The enthalpic pair interaction coefficients hEN for NaI–alcohol in water and NaI–water in alcohols were determined, and the effect of temperature on hEN values in the systems under study was analyzed.

Thermodynamic properties of water in the water-poor region of binary water + alcohol mixtures

2005 ◽  
Vol 83 (5) ◽  
pp. 420-429 ◽  
Author(s):  
Karin Liltorp ◽  
Peter Westh ◽  
Yoshikata Koga
Keyword(s):  
Hydrogen Bonding ◽  
Composition Dependence ◽  
Pure Water ◽  
Molar Enthalpy ◽  
Partial Molar Enthalpy ◽  
Alcohol Water ◽  
Mixing Schemes ◽  
Alcohol Mixtures ◽  
Excess Partial Molar Enthalpy ◽  
Water Alcohol

In our previous thermodynamic studies, we suggested that alcohol molecules in water-poor water + alcohol mixtures exist as alcohol clusters in a form similar to the pure alcohols. Here, we use calorimetry and densitometry to investigate how H2O interacts with alcohol clusters in water-poor binary aqueous mixtures of 12 different alcohols. The composition dependence of the measured excess partial molar enthalpy and volume of water (HEW and VEW), along with entropy data calculated from HEW and literature data for excess chemical potentials, showed that in water-poor solutions of small alcohols such as methanol, ethanol, and 1-propanol, mutual water–water interactions are endothermic, but entropically favorable. Conversely, in long-chain solvents such as 1-octanol and 1-decanol, the interaction is exothermic and entropically unfavorable. We suggest that these observations reflect water–alcohol hydrogen bonding in short-chain solvents and water clustering with more hydrogen bonding than in pure water or "dewetting" in mixtures of the longer alcohols, respectively. The composition dependence of HEW was also used to locate anomalies that specify the boundary between the mixing schemes characterizing the intermediate and the water-poor regions of alcohol + water mixtures.Key words: aqueous alkane-mono-ols, excess partial molar enthalpy, entropy and volume, mixing schemes.

Equilibria in Water–Alcohol Mixtures

Nature ◽  
1963 ◽  
Vol 199 (4894) ◽  
pp. 692-693 ◽  
Author(s):  
A. JOHNSON ◽  
B. B. NILAWAR ◽  
R. H. PETERS
Keyword(s):  
Alcohol Mixtures ◽  
Water Alcohol

Measurement and Correlation of Liquid–Liquid Equilibria of Alcohol+Water+Alcohol Systems and Alcohol+Water+Alkane Systems

2012 ◽  
Vol 38 (2) ◽  
pp. 69-75
Author(s):  
Katsumi Yokoyama ◽  
Hiroyuki Matsuda ◽  
Kiyofumi Kurihara ◽  
Katsumi Tochigi
Keyword(s):  
Alcohol Water ◽  
Water Alcohol

scholarly journals The Effects of the Characteristics of Support Layers on Separation of Water-Alcohol Mixtures through Chitosan Pervaporation Composite Membranes.

MEMBRANE ◽  
1995 ◽  
Vol 20 (3) ◽  
pp. 229-238
Author(s):  
Qunhui Guo ◽  
Haruhiko Ohya ◽  
Youichi Negishi ◽  
Jicai Huang
Keyword(s):  
Composite Membranes ◽  
Alcohol Mixtures ◽  
Water Alcohol
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