Jörg C. Tiller

Combination of a Viscoelastic and a Tribological Analysis of a Low‐Density Polyethylene with a High Degree of Cross‐linking

Franziska Schneck, Philana O. Kruse, Daniel Hesse, Nelson Filipe Lopes Dias et autres

Front Cover: In article 2400042, Ulrich A. Handge and co-workers analyze the effect of crosslinking of a low-density polyethylene (LDPE) on viscoelastic and tribological properties. Wear can be effectively reduced already at a low peroxide concentration of 1 phr. By extending the …

Combination of a Viscoelastic and a Tribological Analysis of a Low‐Density Polyethylene with a High Degree of Cross‐linking

Franziska Schneck, Philana O. Kruse, Daniel Hesse, Nelson Filipe Lopes Dias et autres

Abstract Cross‐linking of polymers is an efficient method to tailor the end‐use properties of polymer materials. Cross‐linking using a chemical agent, e.g., dicumyl peroxide (DCP), allows for a spatially uniform network formation in the melt state. In addition, it is also associated …

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Ultrastrong Poly(2‐Oxazoline)/Poly(Acrylic Acid) Double‐Network Hydrogels with Cartilage‐Like Mechanical Properties

Paola Andrea Benitez‐Duif, Marina Breisch, Daniel Kurka, Karlina Edel et autres

Abstract The exceptional stiffness and toughness of double‐network hydrogels (DNHs) offer the possibility to mimic even complex biomaterials, such as cartilage. The latter has a limited regenerative capacity and thus needs to be substituted with an artificial material. DNHs composed of cross‐linked …

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Enhanced dissolution of silver nanoparticles in a physical mixture with platinum nanoparticles based on the sacrificial anode effect

Marina Breisch, Kateryna Loza, Kevin Pappert, Alexander Rostek et autres

A strategy to reduce implant-related infections is the inhibition of the initial bacterial implant colonization by biomaterials containing silver (Ag). The antimicrobial efficacy of such biomaterials can be increased by surface enhancement (nanosilver) or by creating a sacrificial anode system for Ag. …

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Influence of etching-pretreatment on nano-grained WC-Co surfaces and properties of PVD/HVOF duplex coatings

Wolfgang Tillmann, Leif Hagen, Dominic Stangier, Marius Krabiell et autres

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Bimetallic silver–platinum nanoparticles with combined osteo-promotive and antimicrobial activity

Marina Breisch, Viktoria Grasmik, Kateryna Loza, Kevin Pappert et autres

Abstract Bimetallic alloyed silver–platinum nanoparticles (AgPt NP) with different metal composition from Ag 10 Pt 90 to Ag 90 Pt 10 in steps of 20 mol% were synthesized. The biological effects of AgPt NP, including cellular uptake, cell viability, osteogenic differentiation and …

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Investigating the crystallinity of Poly(butylene)terephthalate (PBT): Correlation between THz TDS measurements and X-ray scattering data

Stefan Sommer, Thomas Raidt, Alex Engel, Jan C. Balzer et autres

We present angle-resolved terahertz time-domain spectroscopy (THz TDS) measurements of poly(butylene) terephthalate (PBT) and compare the results to x-ray scattering measurements. This comparison confirms that the THz TDS measurements can be correlated to the crystal structure. Further, the THz TDS measurements give …

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VOC Sorption in Stretched Cross-Linked Natural Rubber

Nikola Gushterov, Ferruccio Doghieri, Dominik Quitmann, Elisabeth Niesing et autres

Sorption of volatile organic compound (VOC) vapors in natural rubber (NR) was measured at 20 °C using a magnetic suspension balance. Experiments were performed with non-cross-linked NR, as well as NR cross-linked with dicumyl peroxide. Stretching the cross-linked NR samples leads to …

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THz-Spectroscopy on High Density Polyethylene with Different Crystallinity

Stefan Sommer, Thomas Raidt, Bernd Fischer, Frank Katzenberg et autres

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Ring-closing olefin metathesis in the aqueous phase of amphiphilic conetworks consisting of fluorophilic and hydrophilic compartments

Eva M. Hensle, Jörg C. Tiller, Willi Bannwarth

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Nanophase-Separated Amphiphilic Conetworks as Versatile Matrixes for Optical Chemical and Biochemical Sensors

Michael Hanko, Nico Bruns, Sara Rentmeister, Jörg C. Tiller et autres

As a novel class of sensor matrixes, nanophase-separated amphiphilic polymeric conetworks (APCNs) open a new dimension for optical chemical and biochemical sensing. These conetworks consist of a hydrophilic phase-we used poly(2-hydroxyethyl acrylate), poly(2-(dimethylamino)ethyl acrylate), or polycationic poly(2-(trimethylammonium)ethyl acrylate)-and of a hydrophobic phase-poly(dimethylsiloxane). …

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Silver-Based Antimicrobial Coatings

Jörg C. Tiller

Three different antimicrobial coatings based on silver were prepared, characterized, and studied regarding their antimicrobial activity. A silver coating prepared by physical vapour deposition requires a silver content of at least 32 μg silver/cm 2 to completely inhibit the growth of the …

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