Results 41 to 50 of about 12,271 (224)

New aspects in the phase behaviour of poly-N-isopropyl acrylamide: systematic temperature dependent shrinking of PNiPAM assemblies well beyond the LCST [PDF]

, 2015
We investigate the phase behaviour of aqueous dispersions of poly-N-isopropyl acrylamide (PNiPAM) microgels above their lower critical solution temperature (LCST) and find that beyond a well-defined concentration the systems exhibit a peculiar behaviour:
Bischofberger, Irmgard, Trappe, Veronique   +1 more
core   +1 more source

Temperature induced solubility transitions of various poly(2-oxazoline)s in ethanol-water solvent mixtures [PDF]

, 2010
The solution behavior of a series of poly(2-oxazoline)s with different side chains, namely methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, pentyl, hexyl, heptyl, octyl, nonyl, phenyl and benzyl, are reported in ethanol-water solvent mixtures based
Hoogenboom, Richard, Lambermont-Thijs, Hanneke ML, Schubert, Ulrich S, van der Put, Jeroen PW, Van Kuringen, Huub PC   +4 more
core   +8 more sources

Scaled water sigma potential as a descriptor of LCST and UCST behavior in aqueous ionic liquid solutions

Journal of Ionic Liquids
This study introduces the scaled sigma potential of water (σr), a new metric using the COSMO-RS (Conductor like Screening Model for Real Solvents) framework, as a descriptor of upper and lower critical solution temperature (UCST and LCST) governed phase ...
Sidharth Sanadhya, Gregory M. Durling, Brandon L. Ashfeld, Saeed Moghaddam   +3 more
doaj   +1 more source

End-group functionalization of poly(2-oxazoline)s using methyl bromoacetate as initiator followed by direct amidation [PDF]

, 2019
Poly(2-alkyl/aryl-2-oxazoline)s (PAOx) are an alluring class of polymers for many applications due to the broad chemical diversity that is accessible for these polymers by simply changing the initiator, terminating agent and the monomer(s) used in their ...
Arys, Koen, Glassner, Mathias, Hoogenboom, Richard, Podevyn, Annelore, Retamero De La Rosa, Victor   +4 more
core   +2 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   +2 more sources

Reversible Thermoassociation of Water-Soluble Polymers Thermoassociation réversible de polymères hydrosolubles

Oil & Gas Science and Technology, 2006
In various industrial fields, water soluble polymers are commonly used as thickening agents to control the reology of aqueous fluids. Nevertheless, their properties are weakened as the temperature increases. In order to overcome this problem, the concept
L'alloret F., Maroy P., Hourdet D., Audebert R.   +3 more
doaj   +1 more source

Thermoregulated Coacervation, Metal-Encapsulation and Nanoparticle Synthesis in Novel Triazine Dendrimers

Molecules, 2016
The synthesis and solubility behaviors of four generation five (G5) triazine dendrimers are studied. While the underivatized cationic dendrimer is soluble in water, the acetylated and propanoylated derivatives undergo coacervation in water upon ...
Fermín Ramírez-Crescencio, Alan E. Enciso, Mirza Hasan, Viviana C. P. da Costa, Onofrio Annunziata, Rocío Redón, Jeffery L. Coffer, Eric E. Simanek   +7 more
doaj   +1 more source

Enhanced cancer therapy with cold-controlled drug release and photothermal warming enabled by one nanoplatform [PDF]

, 2018
Stimuli-responsive nanoparticles hold great promise for drug delivery to improve the safety and efficacy of cancer therapy. One of the most investigated stimuli-responsive strategies is to induce drug release by heating with laser, ultrasound, or ...
Agarwal, Pranay, He, Xiaoming, Liang, Yutong, Lu, Xiongbin, Tkaczuk, Katherine H. R., Wang, Hai, Xu, Jiangsheng, Zhao, Gang   +7 more
core   +1 more source

Controlled Movement of Soft Actuators using Multi‐Responsive Microgel Arrays and Microcirculatory Systems

Advanced Functional Materials, EarlyView.
Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang, Brennan P. Watts, Stephen A. Morin   +2 more
wiley   +1 more source

Interionic bonding in aqueous phosphonium ionic liquid solutions exhibiting LCST behavior with high phase separation temperatures

Journal of Ionic Liquids
Phosphonium-derived ionic liquids have emerged as a powerful class of thermoresponsive materials with sought after Lower Critical Solution Temperature (LCST) phase separation with applications across a broad range of fields.
Eva M. Gulotty, Sidharth Sanadhya, Katelyn A. Wendt, Zachary D. Tucker, Saeed S. Moghaddam, Brandon L. Ashfeld   +5 more
doaj   +1 more source