Publications de Razvan Cristian Neagu

The potential of wood fibers as reinforcement in cellular biopolymers

Pierre-Etienne Bourban, Matthieu Cuénoud, Razvan Cristian Neagu

Wood fiber-reinforced polylactic acid composite foams have been successfully produced using supercritical carbon dioxide. The addition of fibers had a strong effect on microstructure of the foams. An increase in wood fiber content implied smaller average c ...

SAGE Publications2012

Cellular biocomposites from polylactide and microfibrillated cellulose

Pierre-Etienne Bourban, John Christopher Plummer, Carole Boissard, Razvan Cristian Neagu

This paper describes the production of "green" microfibrillated cellulose-reinforced polylactide cellular biocomposites using a wet mixing technique combined with super-critical carbon dioxide foaming. The effect of composition on the morphology, density a ...

SAGE Publications2012

Foaming Biocomposites of Microfibrillated Cellulose and Polylactic Acid Paper

Pierre-Etienne Bourban, Carole Boissard, Mallory Genoud, Razvan Cristian Neagu

2011

Structures with adaptive stiffness and damping integrating shear thickening fluids

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer, Sébastien Lavanchy, Razvan Cristian Neagu

The invention relates in particular to a method to process composite structures with tailored stiffness and damping performance incorporating a smart material, namely a shear thickening fluid (STF), preferably at the interface between two elements belongin ...

2009

Processing and Mechanical Properties of Novel Wood Fibre Composites Foams

Pierre-Etienne Bourban, Matthieu Cuénoud, Razvan Cristian Neagu

Wood fibre reinforced polylactic acid (PLA) composite foams have been successfully produced using supercritical carbon dioxide. A significant increase of specific properties, both stiffness and strength, was achieved by adding 5-10 wt% wood fibres. The exp ...

2009

Micromechanics and damping properties of composites integrating shear thickening fluids

Pierre-Etienne Bourban, Razvan Cristian Neagu

Damping is an important parameter for vibration control, noise reduction, fatigue endurance or impact resistance of composite materials. In this study, a micromechanical model was used to predict the damping of a composite material containing shear thicken ...

2009

Stiffness of Aligned Wood Fiber Composites: Effect of Microstructure and Phase Properties

Razvan Cristian Neagu

The effect of wood fiber anisotropy and their geometrical features on wood fiber composite stiffness is analyzed. An analytical model for an N-phase composite with orthotropic properties of constituents is developed and used. This model is a straightforwar ...

2008

Processing and mechanical properties of novel wood fibre composites foams

Pierre-Etienne Bourban, Matthieu Cuénoud, Razvan Cristian Neagu

2008

Micromechanics of composites with integrated shear thickening fluids

Pierre-Etienne Bourban, Christian Fischer, Razvan Cristian Neagu

2008