Publications de Céline Samira Wyss

An Injectable Family Of Soft Tissue Hydrogel Adhesives For Knee Applications

Dominique Pioletti, Pierre-Etienne Bourban, Christophe Moser, Peyman Karami, Céline Samira Wyss

MARY ANN LIEBERT, INC2022

Hybrid hydrogels for load-bearing implants

Load-bearing tissues such as articular cartilage or meniscus are not infallible. They might fail due to trauma, over-solicitations, or diseases, which could subsequently alter the mobility of the patient. Repairing these damaged tissues in a minimally inva ...

EPFL2021

An Intrinsically-Adhesive Family of Injectable and Photo-Curable Hydrogels with Functional Physicochemical Performance for Regenerative Medicine

Dominique Pioletti, Pierre-Etienne Bourban, Christophe Moser, Peyman Karami, Naser Nasrollahzadeh Mamaghani, Céline Samira Wyss

Attaching hydrogels to soft internal tissues is crucial for the development of various biomedical devices. Tough sticky hydrogel patches present high adhesion, yet with lack of injectability and the need for treatment of contacting surface. On the contrary ...

WILEY-V C H VERLAG GMBH2021

Silk granular hydrogels self-reinforced with regenerated silk fibroin fibers

Dominique Pioletti, Pierre-Etienne Bourban, Peyman Karami, Céline Samira Wyss, Adrien Julien Demongeot

Granular hydrogels with high stability, strength, and toughness are laborious to develop. Post-curing is often employed to bind microgels chemically and enhance mechanical properties. Here a unique strategy was investigated to maintain microgels together w ...

2021

Hybrid granular hydrogels: combining composites and microgels for extended ranges of material properties

Dominique Pioletti, Pierre-Etienne Bourban, Peyman Karami, Céline Samira Wyss

Developing hydrogels with optimal properties for specific applications is challenging as most of these properties, such as toughness, stiffness, swelling or deformability, are interrelated. The improvement of one property usually comes at the cost of anoth ...

2020

Cross-linkable polymer, hydrogel, and method of preparation thereof

Dominique Pioletti, Pierre-Etienne Bourban, Christophe Moser, Peyman Karami, Céline Samira Wyss

The invention relates to a cross-linkable polymer comprising a base polymer comprising functional groups at least some of which have been reacted with a first organic molecule comprising a cross-linkable unit and with a second organic molecule capable of b ...

2020

Composite Double-Network Hydrogels To Improve Adhesion on Biological Surfaces

Dominique Pioletti, Peyman Karami, Pierre-Etienne Bourban, Christophe Moser, Andreas Schmocker, Azadeh Khoushabi, Céline Samira Wyss, Martin Broome

Despite the development of hydrogels with high mechanical properties, insufficient adhesion between these materials and biological surfaces significantly limits their use in the biomedical field. By controlling toughening processes, we designed a composite ...

2018

Tailoring swelling to control softening mechanisms during cyclic loading of PEG/cellulose hydrogel composites

Dominique Pioletti, Azadeh Khoushabi, Pierre-Etienne Bourban, Baris Çaglar, Céline Samira Wyss

One of the novel approaches for discogenic lower back pain treatment is to permanently replace the core of the intervertebral disc, so-called Nucleus Pulposus, through minimally invasive surgery. Recently, we have proposed Poly(Ethylene Glycol) Dimethacryl ...

2018

Cyclic loading of a cellulose/hydrogel composite increases its fracture strength

Dominique Pioletti, Céline Samira Wyss, Pierre-Etienne Bourban, Peyman Karami

The fracture properties of hydrogels which present similar characteristics to the Mullins effect is expected to decrease under repeated cyclic loading. Therefore, we assessed how cyclic loading affects the fracture behavior, the distribution of strain fiel ...

2018