Thermoresponsive Poly(Ionic Liquid)s in Aqueous Salt Solutions: Salting-Out Effect on Their Phase Behavior and Water Absorption/Desorption Properties

2016 ◽  
Vol 37 (14) ◽  
pp. 1130-1134 ◽  
Author(s):  
Akiyoshi Okafuji ◽  
Yuki Kohno ◽  
Hiroyuki Ohno
Keyword(s):  
Ionic Liquid ◽  
Water Absorption ◽  
Phase Behavior ◽  
Salt Solutions ◽  
Salting Out ◽  
Aqueous Salt Solutions ◽  
Poly Ionic Liquid

Self-assembly of highly asymmetric, poly(ionic liquid)-rich diblock copolymers and the effects of simple structural modification on phase behaviour

2019 ◽  
Vol 10 (6) ◽  
pp. 751-765 ◽  
Author(s):  
Alyssa W. May ◽  
Zhangxing Shi ◽  
Dilanji B. Wijayasekara ◽  
Douglas L. Gin ◽  
Travis S. Bailey
Keyword(s):  
Ionic Liquid ◽  
Phase Behavior ◽  
Self Assembly ◽  
Structural Modification ◽  
Diblock Copolymers ◽  
Alkyl Substituent ◽  
Phase Behaviour ◽  
Phase Boundaries ◽  
Poly Ionic Liquid

A series of ATRP-synthesized poly(IL) diblock copolymers exhibit morphological phase behavior with shifted phase boundaries and alkyl substituent dependent segregation.

scholarly journals Experimental determination of Henry's law constants of difluoromethane (HFC-32) and the salting-out effects in aqueous salt solutions relevant to seawater

2017 ◽  
Vol 17 (12) ◽  
pp. 7495-7507
Author(s):  
Shuzo Kutsuna
Keyword(s):  
Henry's Law ◽  
Gas Stripping ◽  
Atmospheric Gases ◽  
Salt Solutions ◽  
Salting Out ◽  
Henry’S Law ◽  
Aqueous Salt Solutions ◽  
Water Equilibrium ◽  
Hoff Equation

Abstract. Gas-to-water equilibrium coefficients, KeqS (in M atm−1), of difluoromethane (CH2F2), a hydrofluorocarbon refrigerant (HFC-32), in aqueous salt solutions relevant to seawater were determined over a temperature (T) range from 276 to 313 K and a salinity (S) range up to 51 ‰ by means of an inert-gas stripping method. From the van't Hoff equation, the KeqS value in water, which corresponds to the Henry's law constant (KH), at 298 K was determined to be 0.065 M atm−1. The salinity dependence of KeqS (the salting-out effect), ln(KH∕KeqS), did not obey the Sechenov equation but was proportional to S0. 5. Overall, the KeqS(T) value was expressed by ln(KeqS(T))  =  −49.71 + (77.70 − 0.134  ×  S0. 5)  ×  (100∕T) + 19.14  ×  ln(T∕100). By using this equation in a lower-tropospheric semi-hemisphere (30–90 °S) of the Advanced Global Atmospheric Gases Experiment (AGAGE) 12-box model, we estimated that 1 to 4 % of the atmospheric burden of CH2F2 resided in the ocean mixed layer and that this percentage was at least 4 % in the winter; dissolution of CH2F2 in the ocean may partially influence estimates of CH2F2 emissions from long-term observational data of atmospheric CH2F2 concentrations.

scholarly journals SALTING-OUT PARAMETERS OF GAS SOLUBILITY IN AQUEOUS SALT SOLUTIONS

1970 ◽  
Vol 3 (1) ◽  
pp. 18-24 ◽  
Author(s):  
KAKUSABURO ONDA ◽  
EIZO SADA ◽  
TAKESHI KOBAYASHI ◽  
SHIGEHARU KITO ◽  
KUNIMITSU ITO
Keyword(s):  
Gas Solubility ◽  
Salt Solutions ◽  
Salting Out ◽  
Aqueous Salt Solutions

scholarly journals Experimental determination of Henry's law constants of difluoromethane (HFC-32) and the salting-out effects in aqueous salt solutions relevant to seawater

2017 ◽  
Author(s):  
Shuzo Kutsuna
Keyword(s):  
Henry's Law ◽  
Gas Stripping ◽  
Atmospheric Gases ◽  
Salt Solutions ◽  
Salting Out ◽  
Henry’S Law ◽  
Aqueous Salt Solutions ◽  
Water Equilibrium ◽  
Hoff Equation

Abstract. Gas-to-water equilibrium coefficients, KeqS (in M atm−1) of difluoromethane (CH2F2), a hydrofluorocarbon refrigerant (HFC-32), in aqueous salt solutions relevant to seawater were determined over a temperature (T) range from 276 to 313 K and a salinity (S) range up to 51 ‰ by means of an inert-gas stripping method. From the van't Hoff equation, the KeqS value in water, which corresponds to the Henry's law constant (KH), at 298 K was determined to be 0.064 M atm−1. The salinity dependence of KeqS (the salting-out effect), ln(KH/KeqS), did not obey the Sechenov equation but was represented by an equation involving S and S0.5. Overall, the KeqS(T) value was expressed by ln(KeqS(T)) = −49.7122 + 77.7018 × (100/T) + 19.1379 × ln(T/100) + [−0.2261 + 0.5176 × (T/100)] × S0.5 + [0.0362 − 0.1046 × (T/100)] × S. By using this equation in a lower tropospheric semi-hemisphere (30° S–90° S) of the Advanced Global Atmospheric Gases Experiment (AGAGE) 12-box model, we estimated that 1 to 5 % of the atmospheric burden of CH2F2 resided in the ocean mixed layer and that this percentage was at least 5 % in the winter; dissolution of CH2F2 in the ocean may partially influence estimates of CH2F2 emissions from long-term observational data of atmospheric CH2F2 concentrations.

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