Results 71 to 80 of about 98,826 (178)

Weak polyelectrolyte brushes

Soft Matter, 2022
Grafted weak polyelectrolytes (brushes) change shape with pH and/or added salt. This gives them “smart” properties that can be used in adhesion, lubrication, or actuation.
openaire   +2 more sources

Dynamics of Collapse of flexible Polyelectrolytes and Polyampholytes

, 2000
We provide a theory for the dynamics of collapse of strongly charged polyelectrolytes (PEs) and flexible polyampholytes (PAs) using Langevin equation.
Allen M. P., Barrat J.-L., Bloomfield V. A., Brilliantov N. V., de Gennes P. G., Delsanti M., Dobrynin A. V., For, Gonzalez-Mozuelos P., Gosule L. C., Gønbech-Jensen N., Kantor Y., Khokhlov A. R., Khokhlov A. R., Klooster N. Th. M., Lee N., Levin Y., Lifshitz I. M., Lord Rayleigh, Lyulin A. V., Manning G., Micka U., Netz R. R., Odijk T., Olvera de la Cruz M., Pitard E., Podgornik R., Rouzina I., Schiessel H., Shklovskii B., Skolnick J., Solis F. J., Solis J. F., Starodoubtsev S. G., Stevens M. J., There, Widom J., Winkler R. G.   +37 more
core   +1 more source

Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking

Membranes, 2019
In recent decades, the advancements in layer-by-layer (LBL) assembly technology have provoked increasing interest in the preparation of multilayer polyelectrolyte membranes with excellent performance.
Yan Liu, George Q. Chen, Xiuli Yang, Huining Deng   +3 more
doaj   +1 more source

Sandwich-like layer-by-layer assembly of gold nanoparticles with tunable SERS properties

Beilstein Journal of Nanotechnology, 2016
Sandwich-like layer-by-layer thin films consisting of polyelectrolytes and gold nanoparticles were utilized to construct surface-enhanced Raman scattering (SERS) substrates with tunable SERS properties. It is found that both the size of the nanoparticles
Zhicheng Liu, Lu Bai, Guizhe Zhao, Yaqing Liu   +3 more
doaj   +1 more source

Role of Multipoles in Counterion-Mediated Interactions between Charged Surfaces: Strong and Weak Coupling

, 2009
We present general arguments for the importance, or lack thereof, of the structure in the charge distribution of counterions for counterion-mediated interactions between bounding symmetrically charged surfaces.
A Naji, Bohinc K, Deraad L L, Doi M, Levin Y, M Kanduč, Maset S, Messina R, Moreira A G, P A Pincus, Podgornik R, Poon W C K, R Podgornik, Turesson M, Y S Jho   +14 more
core   +1 more source

Like-Charge Colloid-Polyelectrolyte Complexation

, 2002
We investigate the complexation of a highly charged sphere with a long flexible polyelectrolyte, \textit{both negatively charged} in salt free environment. Electroneutrality is insured by the presence of divalent counterions. Using molecular dynamics (MD)
Holm, Christian, Kremer, Kurt, Messina, Rene   +2 more
core   +1 more source

Differential hydration lubrication performance of polyelectrolyte-modified UHMWPE promoted by diverse charge characteristics

Friction
Hydrated ions can achieve exceptional hydration lubrication through their adsorption onto oppositely charged surfaces. Similarly, the charge characteristics of polyelectrolytes are expected to significantly impact the hydration lubrication performance of
Jianing Xu, Tianyi Han, Chenhui Zhang, Jianbin Luo   +3 more
doaj   +1 more source

Theory of the Observed Ultra-Low Friction between Sliding Polyelectrolyte Brushes

, 2008
It is shown using a method based on a modified version of the mean field theory of Miklavic Marcelja that it should be possible for osmotic pressure due to the counterions associated with the two polyelectrolyte polymer brush coated surfaces to support a
Sokoloff, J. B.
core   +2 more sources

Polyelectrolyte chains in poor solvent. A variational description of necklace formation

, 2001
We study the properties of polyelectrolyte chains under different solvent conditions, using a variational technique. The free energy and the conformational properties of a polyelectrolyte chain are studied minimizing the free energy $F_N$, depending on ...
Lee, Namkyung, Migliorini, Gabriele, Rostiashvili, Vakhtang, Vilgis, Thomas A.   +3 more
core   +1 more source

Fluorine-Free Single-Component Polyelectrolyte of Poly(ethylene glycol) Bearing Lithium Methanesulfonylsulfonimide Terminal Groups: Effect of Structural Variance on Ionic Conductivity

Technologies
Fluorine-free single-component polyelectrolytes were developed via the hybridization of lithium methanesulfonylsulfonimide (LiMSSI) moieties to poly(ethylene glycol) (PEG) derivatives with different morphologies, and the relationship between the ...
Bungo Ochiai, Koki Hirabayashi, Yudai Fujii, Yoshimasa Matsumura   +3 more
doaj   +1 more source