Concept

Oxyde d'éthylène

Publications associées (380)

Complex coacervate core micelles with a lysozyme-modified corona

This paper describes the preparation, characterization, and enzymatic activity of complex coacervate core micelles (C3Ms) composed of poly (acrylic acid) (PAA) and poly (N- methyl-2- vinyl pyridinium iodide)-b-poly (ethylene oxide) (PQ2VP-PEO) to which the ...

2007

RGD-Functionalized polymer brushes as substrates for the integrin specific adhesion of human umbilical vein endothelial cells

Nikolaos Stergiopoulos, Harm-Anton Klok, Paolo Silacci, Stefano Tugulu

This report demonstrates the feasibility of surface-initiated atom transfer radical polymerization to prepare thin polymer layers ("brushes") that can be functionalized with short peptide ligands and which may be of use as coatings to promote endothelializ ...

2007

Electrochemical modification of the catalytic activity of TiO2/YSZ supported rhodium films

Christos Comninellis, György Foti

The electrochemical activation of ethylene oxidation was studied over rhodium catalysts of different thickness (40, 100 and 160 nm) sputtered on top of a thin layer of TiO2 deposited on YSZ. The strong relationship between catalytic activity and oxidation ...

Springer, Springer-Verlag2007

Electrochemical modification of the catalytic activity of TiO2/YSZ supported rhodium films

Christos Comninellis, György Foti

2007

Ammonium Chloride Promoted Three-Component Synthesis of 5-Iminooxazoline and Its Subsequent Transformation to Macrocyclodepsipeptide

Jieping Zhu

A three-component reaction of an alpha ,alpha -disubstituted alpha -isocyanoacetamide, an aldehyde and an amino alc. afforded 5-iminooxazolines, which, upon sapon., cyclized under acidic conditions to provide the macrocyclodepsipeptides in good overall yie ...

2007

Enzymatic formation of modular cell-instructive fibrin analogs for tissue engineering

Matthias Lütolf, Jeffrey Alan Hubbell, Martin Ehrbar

The molecular engineering of cell-instructive artificial extracellular matrices is a powerful means to control cell behavior and enable complex processes of tissue formation and regeneration. This work reports on a novel method to produce such smart biomat ...

2007

Biomolecular hydrogels formed and degraded via site-specific enzymatic reactions

Matthias Lütolf, Jeffrey Alan Hubbell, Martin Ehrbar

We present polymeric hydrogel biomaterials that are biomimetic both in their synthesis and degradation. The design of oligopeptide building blocks with dual enzymatic responsiveness allows us to create polymer networks that are formed and functionalized vi ...

2007

Production and properties of substituted LaFeO3-perovskite tubular membranes for partial oxidation of methane to syngas

Jan Van Herle, Stefan Diethelm, Defne Bayraktar

Tubular membranes of La0.6Ca0.4Fe0.75Co0.25O3−δ and La0.5Sr0.5Fe1−yTiyO3−δ (y = 0, 0.2) for the application of partial oxidation of methane to syngas were produced by thermoplastic extrusion and investigated by oxygen permeation measurements. The optimum c ...

2007

Ultra-thin hybrid organic/inorganic gas barrier coatings on polymers

Yves Leterrier, Bandeep Singh, Gil Rochat

The oxygen transmission rate of 48 nm thick SiO2 coatings on a poly(ethylene terephthalate) (PET) substrate was reduced by a factor of three after applying an 8 nm thick layer of oligomerized gammaaminopropyltriethoxysilane (γ-APS). Increasing the thicknes ...

2007

Durability of aminosilane-silica hybrid gas-barrier coatings on polymers

Yves Leterrier, Bandeep Singh, Gil Rochat

Aminosilane solutions with pH equal to 8 and to 11 were applied and cured on SiO2 coated poly(ethylene terephthalate) (PET) films. The permeability of the silane-silica hybrid coating on PET was reduced twofold compared to that of the SiO2/PET film, at sol ...

2007

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