Miscibility and lower critical solution temperature type phase behavior of poly(ethyl acrylate)/poly(vinylidene fluoride-cohexafluoro acetone) blends

1992 ◽  
Vol 29 (1-2) ◽  
pp. 97-103 ◽  
Author(s):  
Yoshihisa Kano ◽  
Saburo Akiyama
Keyword(s):  
Phase Behavior ◽  
Lower Critical Solution Temperature ◽  
Vinylidene Fluoride ◽  
Ethyl Acrylate ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Type Phase ◽  
Poly Vinylidene Fluoride

A polyelectrolyte-containing copolymer with a gas-switchable lower critical solution temperature-type phase transition

2019 ◽  
Vol 10 (2) ◽  
pp. 260-266 ◽  
Author(s):  
Jin-Jin Li ◽  
Yin-Ning Zhou ◽  
Zheng-Hong Luo ◽  
Shiping Zhu
Keyword(s):  
Phase Transition ◽  
Cloud Point ◽  
Lower Critical Solution Temperature ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Type Phase

A polyelectrolyte-containing copolymer with a CO2/N2-switchable cloud point, resulting from the gas-induced alternation of hydrophilicity, was prepared.

scholarly journals Unexpected LCST-type phase behaviour of a poly(vinyl thiazolium) polymer in acetone

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57117-57121 ◽  
Author(s):  
Konrad Grygiel ◽  
Weiyi Zhang ◽  
Christophe Detrembleur ◽  
Jiayin Yuan
Keyword(s):  
Phase Transition ◽  
Lower Critical Solution Temperature ◽  
Acetone Solution ◽  
Phase Behaviour ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Type Phase

A poly(vinyl thiazolium) polymer in acetone solution exhibited an unexpected lower critical solution temperature (LCST)-type phase transition.

scholarly journals Lower Critical Solution Temperature Phase Behavior of Natural Rubber/Polybutadiene Blend

2002 ◽  
Vol 34 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Seiichi Kawahara ◽  
Yasuhiro Asada ◽  
Yoshinobu Isono ◽  
Kiyoshige Muraoka ◽  
Yasuhisa Minagawa
Keyword(s):  
Natural Rubber ◽  
Phase Behavior ◽  
Lower Critical Solution Temperature ◽  
Solution Temperature ◽  
Temperature Phase ◽  
Critical Solution Temperature

scholarly journals Unusual Lower Critical Solution Temperature Phase Behavior of Poly(benzyl methacrylate) in a Pyrrolidinium-Based Ionic Liquid

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4850
Author(s):  
Brian R. Carrick ◽  
Claire L. Seitzinger ◽  
Timothy P. Lodge
Keyword(s):  
Ionic Liquid ◽  
Phase Behavior ◽  
Lower Critical Solution Temperature ◽  
Second Virial Coefficient ◽  
Coexistence Curve ◽  
Solution Temperature ◽  
Temperature Phase ◽  
Strong Concentration ◽  
Critical Solution Temperature ◽  
Heating And Cooling

Polymer/ionic liquid systems are being increasingly explored, yet those exhibiting lower critical solution temperature (LCST) phase behavior remain poorly understood. Poly(benzyl methacrylate) in certain ionic liquids constitute unusual LCST systems, in that the second virial coefficient (A2) in dilute solutions has recently been shown to be positive, indicative of good solvent behavior, even above phase separation temperatures, where A2 < 0 is expected. In this work, we describe the LCST phase behavior of poly(benzyl methacrylate) in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide for three different molecular weights (32, 63, and 76 kg/mol) in concentrated solutions (5–40% by weight). Turbidimetry measurements reveal a strong concentration dependence to the phase boundaries, yet the molecular weight is shown to have no influence. The critical compositions of these systems are not accessed, and must therefore lie above 40 wt% polymer, far from the values (ca. 10%) anticipated by Flory-Huggins theory. The proximity of the experimental cloud point to the coexistence curve (binodal) and the thermo-reversibility of the phase transitions, are also confirmed at various heating and cooling rates.

Key Factors to Prepare Polyelectrolytes Showing Temperature-Sensitive Lower Critical Solution Temperature-type Phase Transitions in Water

2012 ◽  
Vol 65 (1) ◽  
pp. 91 ◽  
Author(s):  
Yuki Kohno ◽  
Hiroyuki Ohno
Keyword(s):  
Phase Transition ◽  
Lower Critical Solution Temperature ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Phase Behaviour ◽  
Solution Temperature ◽  
Temperature Sensitive ◽  
Key Factors ◽  
Critical Solution Temperature ◽  
Type Phase

Tetrabutylphosphonium styrenesulfonate and its homopolymer showed a lower critical solution temperature-type phase transition in water. As the hydrophobicity of these monomeric and polymeric salts affects phase behaviour, the phase transition temperature of the polyelectrolyte was changed by the introduction of monomers having different alkyl chain length on the phosphonium cations.

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