Results 181 to 190 of about 4,374 (220)

Water Distribution in Multilayers of Weak Polyelectrolytes

Langmuir, 2006
The water localization in thin polyelectrolyte multilayers assembled from poly(acrylic acid) and poly(allylamine hydrochloride) was investigated with neutron reflectivity in an atmosphere of controlled humidity and with bulk water. Water was found to be distributed asymmetrically within the multilayer and to localize preferentially at the polymer ...
Tanchak, Oleh, Yager, Kevin, Fritzsche, Helmut, Harroun, Thad, Katsaras, John, Barrett, Christopher   +5 more
openaire   +2 more sources

Sprayed Polyelectrolyte Multilayers

Langmuir, 2000
Polyelectrolyte multilayers deposited by sequential spraying of poly(styrenesulfonate) and poly(diallyldimethylammonium) solutions are described. A highly uniform thin film is rapidly obtained over a large area. The morphology, uniformity, and chemical composition of sprayed multilayers, as well as the selective membrane properties, are found to be ...
Joseph B. Schlenoff, Stephan T. Dubas, Tarek Farhat   +2 more
openaire   +1 more source

Where Polyelectrolyte Multilayers and Polyelectrolyte Complexes Meet

Macromolecules, 2006
We summarize existing knowledge and present some new results on the relationship between polyelectrolyte multilayer (PEM) growth and phase behavior of polyelectrolyte complexes (PECs) in solution. Detailed understanding of competition between surface and solution as applied to PEMs requires selective labeling of polymers and/or the application of ...
Svetlana A. Sukhishvili, Eugenia Kharlampieva, Vladimir Izumrudov   +2 more
openaire   +1 more source

Engineering Thiolated Surfaces with Polyelectrolyte Multilayers

ACS Applied Materials & Interfaces, 2019
Interfaces bearing firmly attached thiol groups are useful for many applications requiring the versatile and facile chemistry of the -SH functionality. In this work, rugged ultrathin films were prepared on substrates using layer-by-layer assembly. The surface of these smooth films was capped with a co-polymer containing benzyl mercaptan units.
Jose D. Delgado, Richard L. Surmaitis, Samir Abou Shaheen, Joseph B. Schlenoff   +3 more
openaire   +2 more sources

Polyelectrolyte multilayer coatings for implant osseointegration

13th IEEE International Conference on BioInformatics and BioEngineering, 2013
The number of arthroplasties is rapidly increasing, however most materials used for such applications lack in osseointegration. The improvement of the bone/implant interface has received great attention for many years, with special reference to titanium-based implants.
GIULIANELLI, MASSIMO, PASTORINO, LAURA, FERRETTI, ROBERTA, RUGGIERO, CARMELINA   +3 more
openaire   +2 more sources

Combinatorial Polyelectrolyte Multilayer Film Fabrication

Journal of Nanoscience and Nanotechnology, 2009
A combinatorial strategy for the fabrication of a library of polyelectrolyte multilayer films is presented in this paper. This innovative approach involves the parallel formation of polyelectrolyte multilayer films in the individual wells of polystyrene microtitre plates under various deposition conditions.
Matthew M, Coulter, David S, Dos Santos, Richard W, Loo, M Cynthia, Goh   +3 more
openaire   +2 more sources

Coarsening of Silver Nanoparticles in Polyelectrolyte Multilayers

Langmuir, 2013
In polyelectrolyte multilayer (PEM) films assembled from poly(diallyldimethylammonium chloride) and poly(styrene sulfonate) via the layer-by-layer deposition technique, the counterions were exchanged with silver ions, which were subsequently reduced in situ to produce silver (Ag) nanoparticles.
Jingjing, Wei, Liming, Wang, Xin, Zhang, Xiaojing, Ma, Hui, Wang, Zhaohui, Su   +5 more
openaire   +2 more sources

Protein Adsorption Modalities on Polyelectrolyte Multilayers

Biomacromolecules, 2004
Protein adsorption on polyelectrolyte multilayers (PEMUs) was evaluated using a combination of synthetic polyelectrolytes and proteins, including serum albumin, fibrinogen, and lysozyme. Variables such as surface and protein charge, polymer hydrophobicity, and hydrophilic repulsion were introduced to probe interaction mechanisms.
David S, Salloum, Joseph B, Schlenoff
openaire   +2 more sources

Cell Interactions with Polyelectrolyte Multilayer Films

Biomacromolecules, 2002
The short-term interactions of chondrosarcoma cells with polyelectrolyte multilayer films built up by the alternate adsorption of poly(L-lysine) (PLL) and poly(L-glutamic acid) (PGA) was studied in the presence and in the absence of serum. The films and their interaction with serum proteins were first characterized by means of optical waveguide ...
L, Richert, Ph, Lavalle, D, Vautier, B, Senger, J-F, Stoltz, P, Schaaf, J-C, Voegel, C, Picart   +7 more
openaire   +2 more sources

Surface thermodynamic properties of polyelectrolyte multilayers

Journal of Colloid and Interface Science, 2005
Multilayer architectures of polyelectrolytes fabricated by the layer-by-layer technique (LbL) on pretreated polymeric and inorganic substrates were studied by contact angle measurements. Poly(diallyldimethylammonium chloride), PDADMAC, and poly(sodium 4-styrenesulfonate), PSS, were used as polyelectrolytes. Contact angle data were used to calculate the
Stefan, Köstler, Angel V, Delgado, Volker, Ribitsch   +2 more
openaire   +2 more sources