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Recycling 2019 & Material Science 2019
July 22-23, 2019
Volume 3
Journal of Environmental Geology
Material Science and Nanotechnology
Global Recycling Summit
July 22-23, 2019 | Rome, Italy
6
th
International Conference on
&
Mimic of collagens properties by creating sacrificial bonds on synthetic polymer
Sadia Radji
1
, Stephane Cuenot
2
, Anne-Sophie Duwez
3
1
Pau et Pays de l’Adour University, France
2
Université de Nantes, France
3
University of Liège, Belgium
S
acrificial bonds and hidden length confer on hard and dry natural materials, high strength, stiffness, toughness, and self-
recovery of its function in response to successive mechanical stimulation at the molecular scale. This type of links is
involved in complex hierarchical structures, such as bone, tendons, ligament, nacre, mussels…These natural materials have high
toughness. It has excellent mechanical properties as well as remarkable self-regenerative properties, like self-healing behavior
1,2, which arises in part from secondary sacrificial bonds between chain segments in coiled organic phase.
In the last ten years there have been many important advances in the development of self healing polymers 3-11 and polymer
Nanocomposites. Biomimetics12-16 aims to reproduce some of the properties of natural structural materials, using rationally
engineered and scalable components and processes.
The understanding of the functioning and the principle of the forming mechanism of sacrificial bond (Sb) is of significant
fundamental interest. Indeed, this phenomenon governing interactions at the molecular level of different natural materials (bones,
skin, tendons, abalone, toils of Spider, pearl ....) Is not yet fully elucidated well.
In this work we looking for mimic of the collagen fiber with creating Sb on individuals poly(Acid-Acrylic) (PAA) chains. We
present the results of dynamic force spectroscopy experiments conducted on individuals PAA chains, which were Immersed
in a physiological buffer. Through these experiences, the hidden length and the strength of the rupture of Sbs Were Measured,
in function of loading rates. A clear scheme of formation of Sbs was revealed, and The energy released by their rupture was
quantified.
These results made it possible to understand the role played by these bonds in the mechanical properties at the molecular level.
Biography
Sadia Radji is an Associate Professor in Department of Physics at the University of Pau and the Adour / IPREM-EPCP countries.
Before joining University of Pau and the Adour, she worked as Contract of temporary teaching and research assistant (ATER), in
Department of Physics, at University of Nantes. FromOctober 2006-November 2009 she did her PhD thesis in Physics of Materials. Jean
Rouxel Materials Institute (IMN). Her research interests include Structural properties of materials at nanoscale and molecular scales.
sadia.radji@univ-pau.frSadiaRadjietal.
,JEnvironGeol. |Volume3
ISSN:2591-7641