Results 91 to 100 of about 23,614 (285)

Enhanced oil recovery by nonionic surfactants considering micellization, surface, and foaming properties

Petroleum Science, 2017
Surfactants for enhanced oil recovery are important to study due to their special characteristics like foam generation, lowering interfacial tension between oleic and aqueous phases, and wettability alteration of reservoir rock surfaces.
A. Bera, A. Mandal, H. Belhaj, T. Kumar
semanticscholar   +1 more source

Doping‐Free Polymer Nanoparticle Engineering of n‐Type Organic Mixed Ion–Electron Conductors for Enhancement‐Mode Organic Electrochemical Transistors

Macromolecular Rapid Communications, EarlyView.
We report a nanoparticle formulation strategy for the ladder polymer BBL that enables undoped enhancement‐mode OECTs. Controlled reprecipitation with DBSA yields stable nanoparticles, and spray‐coating forms dense, well‐connected films. The resulting devices exhibit strongly enhanced electrochemical response and transconductance, establishing a ...
Shunsuke Yamamoto, Katsumi Abe, Masaya Mitsuishi   +2 more
wiley   +1 more source

Adsorption Properties and Wettability of Ethoxy- and Propoxy- Derivatives of 2-Ethylhexanol as Sterically Specific Surfactant Structures

Molecules
2-ethylhexanol, an oxo alcohol competitively priced on the global market, has not been explored intensively as a raw material for surfactants, due to its weak hydrophobic character.
Wiesław Hreczuch, Beata Konopczyńska, Marcin Stasiak, Adam Andrzejewski, Krystyna Prochaska   +4 more
doaj   +1 more source

Toward Dynamic Liquid Cell Scaffold: Photoreversible Ion Gels Exhibiting Light‐Induced Sol‐Gel Transitions

Macromolecular Rapid Communications, EarlyView.
Light‐programmable, non‐cytotoxic ion gels based on ABC triblock copolymers undergo photoreversible sol‐gel transitions, crossing the rheological boundary (tan δ ∼ 1). UV–vis light irradiation modulates the lifetime of reversible junctions, switching the scaffold between liquid‐like and solid (gel)‐like states.
Aya Saruwatari, Yuji Kamiyama, Ryota Tamate, Jun Nakanishi, Takeshi Ueki   +4 more
wiley   +1 more source

Effective critical micellar concentration of a zwitterionic detergent: A fluorimetric study on n-dodecyl phosphocholine [PDF]

, 2010
We have investigated the effect of ionic strength on the aggregation behavior of n-dodecyl phosphocholine. On the basis of the classical Corrin-Harkins relation, the critical micellar concentration of this detergent decreases with a biphasic trend on ...
PALLADINO, PASQUALE, RAGONE, RAFFAELE, ROSSI, FILOMENA   +2 more
core   +1 more source

Tuning adsorption and morphology in poly(glutamic acid) via controlled acidic partial deprotection

Polymer International, EarlyView.
Partial deprotection of poly(glutamic acid) generates morphologies and assemblies that match fully deprotected polypeptides in small‐molecule adsorption, extending to block copolypeptides with pH‐dependent effects. Abstract Synthetic polypeptides prepared from N‐carboxyanhydride (NCA) monomers are important platforms for environmental and medical ...
Hunter Wood, Stella Trickett, Joseph Dosch, Farin Weinger, Dan Flaherty, Stefanie Sydlik   +5 more
wiley   +1 more source

Surface and Aggregation Properties of Rhamnolipids in Water–Bioethanol Mixtures: A Step toward Green Formulation Design

Surfaces
Water–ethanol mixtures are largely exploited for many different applications, from industrial processes to pharmaceutical formulations. Surfactants are often added to tune their interfacial properties.
Rodolfo Esposito, Francesco Taddeo, Vincenzo Russo, Irene Russo Krauss, Gerardino D’Errico   +4 more
doaj   +1 more source

Non-equilibrium effects of micelle formation as studied by a minimum particle-based model

, 2019
The formation of self assembled structures such as micelles has been intensively studied and is well understood. The ability of a solution of amphiphilic molecules to develop micelles is depending on the concentration and characterized by the critical ...
Heuer, Andreas, Raschke, Simon
core   +1 more source

Thermosensitive Nanostructured Coacervates Developed by Mixing ABA‐ and AB‐Block Copolymers and Their Unique Sustained Release of Nano‐Micelles in a Regulated Manner

Small, EarlyView.
Polyion complex micelles composed of blends of ABA and AB block copolymers can form coacervates with a hexagonally packed cylinder nanostructure after heating. The resulting coacervates can release the micelles under physiological conditions in a zero‐order kinetics, possessing cargo proteins.
Takumi Egashira, Hiroshi Kamizawa, Yujiro Hamada, Wataru Fushimoto, Hiroshi Y. Yoshikawa, Yuji Higaki, Atsushi Takahara, Takeshi Mori, Yoshiki Katayama, Akihiro Kishimura   +9 more
wiley   +1 more source

The encapsulation of hydrophobic drugs in Pluronic F127 micelles: the effects of drug hydrophobicity, solution temperature and pH

, 2013
Three drugs, Ibuprofen, Aspirin and Erythromycin, are encapsulated in spherical Pluronic F127 micelles. The shapes and the size distributions of the micelles in dilute, aqueous solutions, with and without drugs, are ascertained using cryo- Scanning ...
Bandyopadhyay, Ranjini, Basak, Rajib
core   +1 more source