Results 31 to 40 of about 40,560 (274)

Metallo-polyelectrolytes as a class of ionic macromolecules for functional materials

open access: yesNature Communications, 2018
Polyelectrolytes are a class of macromolecules containing charged groups. Here the authors review properties and functions of metallo-polyelectrolytes to shed light on how to harness fundamental physiochemical properties for applications in biomedical ...
Tianyu Zhu   +6 more
doaj   +1 more source

Solvation and Dissociation in Weakly Ionized Polyelectrolytes [PDF]

open access: yes, 2009
We present a Ginzburg-Landau theory of inhomogeneous polyelectrolytes with a polar solvent. First, we take into account the molecular (solvation) interaction among the ions, the charged monomers, the uncharged monomers, and the solvent molecules ...
Okamoto, Ryuichi, Onuki, Akira
core   +1 more source

The critical micelle concentration as a key determinant in shampoo formulations: Enhanced bioactivity with maintained performance

open access: yesNext Materials
Hypothesis: We hypothesized that determining the critical micelle concentration (CMC) of Sodium Laureth Sulfate (SLES) and formulating a shampoo at this precise concentration would provide equivalent cleaning and foaming performance to a conventional ...
Mohammed Islam Charaf Eddine Hasnaoui   +6 more
doaj   +1 more source

Smart, Naturally-Derived Macromolecules for Controlled Drug Release

open access: yesMolecules, 2021
A series of troxerutin-based macromolecules with ten poly(acrylic acid) (PAA) or poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) homopolymer side chains were synthesized by a supplemental activator and reducing agent atom transfer radical ...
Izabela Zaborniak   +2 more
doaj   +1 more source

Random Polyelectrolytes and Polyampholytes in Solution

open access: yes, 1998
The behavior of polyelectrolytes and polyampholytes in semi-dilute solutions is investigated theoretically. Various statistical charge distributions along the polyelectrolyte chains are considered: smeared, annealed, permuted and quenched.
Andelman, D., Borukhov, I., Orland, H.
core   +1 more source

Optical Platform to Analyze a Model Drug-Loading and Releasing Profile Based on Nanoporous Anodic Alumina Gradient Index Filters

open access: yesNanomaterials, 2021
In this work, a methodology that exploits the optical properties of the nanoporous anodic alumina gradient index filters (NAA-GIFs) has been developed and applied to evaluate in real time the release dynamics of a cargo molecule, acting as a model drug ...
Pankaj Kapruwan   +3 more
doaj   +1 more source

From the double-stranded helix to the chiral nematic phase of B-DNA: a molecular model

open access: yes, 2004
B-DNA solutions of suitable concentration form left-handed chiral nematic phases (cholesterics). Such phases have also been observed in solutions of other stiff or semiflexible chiral polymers; magnitude and handedness of the cholesteric pitch are ...
Ferrarini, A., Tombolato, F.
core   +1 more source

POLYMERIZATION BY INTERACTION α-HALOACRYLIC ACIDS WITH TERTIARY AMINES

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
The results of spontaneous polymerization of α-chloroacrylic and α-bromoacrylic acids with tertiary amines at a low temperature are presented. As a result of spontaneous polymerization during the interaction of α-halodacrylic acids with tertiary amines ...
Yu.A. Malkanduev   +2 more
doaj   +1 more source

Simulation of weak polyelectrolytes: A comparison between the constant pH and the reaction ensemble method

open access: yes, 2017
The reaction ensemble and the constant pH method are well-known chemical equilibrium approaches to simulate protonation and deprotonation reactions in classical molecular dynamics and Monte Carlo simulations.
Holm, Christian   +2 more
core   +1 more source

Amorphous Drug-Polymer Salts

open access: yesPharmaceutics, 2021
Amorphous formulations provide a general approach to improving the solubility and bioavailability of drugs. Amorphous medicines for global health should resist crystallization under the stressful tropical conditions (high temperature and humidity) and ...
Xin Yao, Amy Lan Neusaenger, Lian Yu
doaj   +1 more source

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