Results 11 to 20 of about 15,659,103 (221)

A structural underpinning of the lower critical solution temperature (LCST) behavior behind temperature-switchable liquids [PDF]

Matter
In this study we use state of the art x-ray scattering and molecular dynamics structural probes to carry out a careful analysis of amine-water mixtures that show the unusual lower critical solution temperature (LCST) behavior. The goal is to provide direct experimental evidence for the entropy-lowering molecular cluster formation originally ...
Ian Billinge, Gabriel Barbosa, Songsheng Tao, Maxwell Terban, C. Heath Turner, Simon Billinge, Ngai Yin Yip   +6 more
exaly   +7 more sources

Lower critical solution temperature (LCST) phase behaviour of an ionic liquid and its control by supramolecular host–guest interactions [PDF]

Chemical Communications, 2016
Unique LCST phase behaviour of imidazolium-based ionic liquids is reported, which can be controlled by concentration, the choice of cation, anion and solvent, and by supramolecular complex formation. MD simulations provide insight into the molecular basis of this LCST phenomenon.
Dong, S., Heyda, J., Yuan, J., Schalley, C.   +3 more
exaly   +7 more sources

Performance enhancement of aqueous ionic liquids with lower critical solution temperature (LCST) behavior through ternary mixtures [PDF]

Journal of Materials Chemistry A
Mixtures of two thermally responsive ionic liquids (ILs) in water exhibiting phase separation above a lower critical solution temperature (LCST) demonstrate a synergy that enhances the osmotic strength and lowers the LCST compared to binary mixtures.
Ahmed Mahfouz, Andrew Z. Haddad, Jordan D. Kocher, Akanksha K. Menon   +3 more
openaire   +4 more sources

Effect of polymer concentration on the lifetime and transmittance behavior of a self-oscillating polymer chain with a high lower critical solution temperature [PDF]

MATEC Web of Conferences, 2017
In this study, we investigated the lifetime and self-oscillating behavior of a polymer chain with a high lower critical solution temperature (LCST). The polymer chain comprised 4-vinyl-4´-methyl-2,2´-bipyridinebis(2,2´-bipyridine)bis(hexafluorophosphate)
Nakazumi Tomoka, Hara Yusuke
doaj   +3 more sources

Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature

Fibers, 2021
This study deals with the investigation of the phase state of the polymer systems from polysulfone (PSF) with the addition of polyethylene glycol (PEG-400, Mn = 400 g·mol−1) and polyvinylpyrrolidone (PVP K-30, Mn = 40,000 g·mol−1) in N,N ...
Tatiana V. Plisko, Alexandr V. Bildyukevich, Liang Zhao, Weiqing Huang, Vladimir V. Volkov, Zuohua Huang   +5 more
doaj   +2 more sources

Development of hybrid diblock copolypeptide amphiphile/magnetic metal complexes and their spin crossover with lower-critical-solution-temperature(LCST)-type transition [PDF]

Polymer, 2017
Abstract Diblock copolypeptide amphiphiles have been attracting much interest as motifs for self-assembly in the production of nanostructures such as nanoparticles, nanosheets, and nanofibers. In this study, we first focus on the self-assembly of magnetic metal complexes in water using diblock copolypeptides. In addition, not only were nanocomposites
Tsubasa, Arie, Otsuka, Soichi, Maekawa, Takahiro, Takano, Ryota, Sakurai, Shinichi, Deming, Timothy J, Kuroiwa, Keita   +6 more
openaire   +5 more sources

Lower critical solution temperature versus volume phase transition temperature in thermoresponsive drug delivery systems

eXPRESS Polymer Letters, 2011
One of the most subtle problem in the characterization of thermoresponsive polymers is the evaluation of the relationship between the lower critical solution temperature (LCST) of the linear polymer and the volume phase transition temperature (VPTT) of ...
doaj   +2 more sources

A Comparison between the Lower Critical Solution Temperature Behavior of Polymers and Biomacromolecules [PDF]

Physchem, 2022
All-atom molecular dynamics (MD) simulations are employed to compare the lower critical solution temperature (LCST) behaviors of poly(N-isopropylacrylamide) (PNIPAM) and elastin-like polypeptides (ELPs) with the canonical Val-Pro-Gly-Val-Gly ((VPGVG)n ...
Yuxin Xie, Nan K. Li, Abhishek Singh, Sanket A. Deshmukh, Yaroslava G. Yingling   +4 more
doaj   +2 more sources

Thermodynamic properties of lower critical solution temperature (LCST) mixtures for application in energy–water systems

Physical Chemistry Chemical Physics
A thermodynamic analysis of LCST mixtures reveals important relationships and application-specific property targets. While LCST phase separation is always endothermic, LCST behavior can emerge even when the entropy of mixing is positive.
Jordan D. Kocher, Ahmed Mahfouz, Jesse G. McDaniel, Akanksha K. Menon   +3 more
openaire   +4 more sources

Polyproline: A Synthetic Polypeptide With Unique Properties. [PDF]

Angew Chem Int Ed Engl
Poly‐L‐proline is a unique polypeptide distinguished by its well‐defined secondary structures and unusual thermal behavior. This mini review highlights recent advances in the synthesis of poly‐L‐proline by N‐carboxyanhydride (NCA) polymerization, the formation of structurally defined architectures and nanostructures, and emerging strategies that ...
Scouarnec RL, Galindo JM, Bonduelle C, Heise A.   +3 more
europepmc   +3 more sources