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Concept

Polymère inorganique

Publications associées (22)

On-Demand Cross-Linkable Bottlebrush Polymers for Voltage- Driven Artificial Muscles

Frank Nüesch, Francis Owusu, Yeerlan Adeli

Dielectric elastomer actuators (DEAs) generate motion resembling natural muscles in reliability, adaptability, elongation, and frequency of operation. They are highly attractive in implantable soft robots or artificial organs. However, many applications of ...

AMER CHEMICAL SOC2023

Lamellar carbon-aluminosilicate nanocomposites with macroscopic orientation

Anna Fontcuberta i Morral, Emad Oveisi, Holger Frauenrath, Yannik Fontana, Enzo Jean Raymond Bomal, Dragana Paripovic

Novel preparative approaches towards lamellar nanocomposites of carbon and inorganic materials are relevant for a broad range of technological applications. Here, we describe how to utilize the co-assembly of a liquid-crystalline hexaphenylene amphiphile a ...

ROYAL SOC CHEMISTRY2021

Increased electromechanical sensitivity of polysiloxane elastomers by chemical modification with thioacetic groups

Yee Song Ko

Chemically cross-linked polydimethylsiloxane (PDMS) elastomers have gained importance as a dielectric in elastic capacitor actuators, which elongate when electrically charged. Common PDMS elastomers have a dielectric permittivity of only about 3 and thus e ...

2020

Molecular Engineering of Electrode Surfaces for Electrocatalysis

Patrick Eduard Alexa

Electrocatalysts play an important part on the route towards environmental friendly energy sources. They support modern technologies like fuel cells to move further away from the utilization of fossil fuels and the resulting CO2 emission into our atmospher ...

EPFL2020

Synthesis of solvent-free processable and on-demand cross-linkable dielectric elastomers for actuators

Frank Nüesch

Dielectric elastomer actuators (DEAs) have gained growing interest during the last decade from both the scientific community and industry. However, the high operating voltages needed to drive these actuators reduce their application potential. To date, sev ...

Royal Society of Chemistry2019

Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling

Pedro Miguel Nunes Pereira de Almeida Reis, Matteo Pezzulla, Dong Yan, Anna Lee

We propose and investigate a minimal mechanism that makes use of differential swelling to modify the critical buckling conditions of elastic bilayer shells, as measured by the knockdown factor. Our shells contain an engineered defect at the north pole and ...

ROYAL SOC CHEMISTRY2019

Compound for uses in optical and electrooptical devices

Giuseppe Sforazzini

which can also be embedded into a conjugated oligomeric of polymeric backbone, is proposed for optical and electro optical applications. ...

2017

High Permittivity Silicones for Dielectric Elastomer Actuators

Simon Johannes Dünki

Many technical advances of modern society sprout from the creation of specially customized polymer materials exhibiting unique combinations of properties uncharted so far. Amid this plurality of highly versatile materials, the class of electroactive polyme ...

EPFL2017

Synthesis and Characterisation of Semiaromatic Polyamides Comprising Benzofurobenzofuran Repeating Units

Rosario Scopelliti, Anne-Clémence Corminboeuf, Farzaneh Fadaei Tirani, Holger Frauenrath, Alberto Fabrizio, Bilal Özen, Daniel Görl, Julien Philippe Cretenoud, Thomas Schmaltz

Semiaromatic polyamides are attractive engineering polymers owing to their outstanding thermo-mechanical properties. To expand the scope of semiaromatic polyamides by additional optoelectronic features, one may consider the incorporation of extended pi-con ...

2017

Ionic polymers and use thereof in processing of biomass

Paul Joseph Dyson, Zhaofu Fei, Georgios Savoglidis, Sviatlana Siankevich

The invention provides ionic polymers (IP) consisting of anions and a polymeric backbone containing cations. The invention also provides the ionic polymers incorporated in membranes or attached to solid supports and use of the ionic polymers in processing ...

2017

Synthesis of Responsive Two-Dimensional Polymers via Self-Assembled DNA Networks

Duncan Thomas Lindsay Alexander, Ulrich Aschauer

Despite a growing interest in two-dimensional polymers, their rational synthesis remains a challenge. The solution-phase synthesis of a two-dimensional polymer is reported. ADNA-based monomer self-assembles into a supra-molecular network, which is further ...

Wiley-VCH Verlag GmbH2017

A Versatile Synthetic Path to Thiol Containing Polysiloxanes

A synthetic strategy to polydimethylsiloxanes and polymethylsiloxanes containing thiol functions as end- or side-groups, respectively, is presented. Such polymers are important starting materials for elastomeric networks and postpolymerization modification ...

Wiley-Blackwell2016

Peptide-Polymer Conjugates for Therapeutic Applications

Ana Maria Raduta

Over the last ten years the attention of the pharmaceutical industry has shifted away from small molecules to focus on new biologics such as antibodies, proteins and therapeutic peptides. Herein, peptides have emerged as a particularly interesting category ...

EPFL2015

Cyanine dye polyelectrolytes for organic bilayer solar cells

Lei Wang, Hui Zhang

Polyelectrolytes composed of an anionic sulfoethyl methacrylate/methacrylate backbone and cationic cyanine dyes counter ions are synthesized. The effective reaction sequence is confirmed by NMR spectroscopy and consists of a thermal radical copolymerizatio ...

Elsevier Sci Ltd2014

Parametric numerical investigation of adhesive laminated point connections

Jean-Paul Lebet, Pieter Christian Louter, Manuel Santarsiero

The recent demand for architectural transparency has drastically increased the use of glass material for structural purpose. However, connections between structural glass members represent one of the most critical aspects of glass engineering, due to the f ...

Taylor & Francis Group2013

Functional, Hyperbranched Polyesters Via Baylis-Hillman Polymerization

Harm-Anton Klok, Frederik Roman Wurm, Sanhao Ji

Hyperbranched polyesters are among the most common hyperbranched polymers. One of the interesting features of hyperbranched polyesters is that they contain unreacted hydroxyl and carboxylic acid groups at the linear and terminal structural units, which can ...

2012

New/Surface-Modified Biocompatible Polymer for ICD Lead Insulation

The average lifetime of an implanted pacemaker or defibrillator cable (lead) is approximately 10 years. One of the main lead failure mechanisms is deterioration of the insulation, which can be caused by chemical, biological, and mechanical processes. Each ...

EPFL2011

Thermally Induced Cooperative Molecular Reorientation and Nanoscale Polarization Switching Behaviors of Ultrathin Poly(vinylidene fluoride-trifluoroethylene) Films

Nava Setter, Igor Stolichnov

Ultrathin films of the ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] have recently attracted intensive research interest due to their potential applications in emerging organic devices. As special geometry confinement syst ...

2011

Hybrid Polymer Therapeutics Incorporating Bioresponsive, Coiled Coil Peptide Linkers

Harm-Anton Klok, Bojana Portmann

This article reports the design, synthesis and results of first in vitro model studies of a conceptually novel class of polymer therapeutics in which the cargo is attached to a polymer backbone via a noncovalent, biologically inspired coiled coil linker, w ...

American Chemical Society2010

X-ray ablation of hyaluronan hydrogels: Fabrication of three-dimensional microchannel networks

Giorgio Margaritondo

We present a simple and highly versatile protocol for polymer ablation: hard x-ray irradiation makes it possible to rapidly depolymerize hyaluronan hydrogels and fabricate three-dimensional network of microchannels. Photodynamic and photochemical analyses ...

American Institute of Physics2009