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Volume 6
Research & Reviews: Journal of Material Sciences
CrystalloPolySci 2018
November 19-20, 2018
4
th
International Conference on
Crystallography & Novel Materials
&
9
th
International Conference on
Biopolymers & Polymer Sciences
November 19-20, 2018 Bucharest, Romania
Ioana Chiulan, Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C9-039
Influence of nanosilica content on the thermal and mechanical properties of liquid silicone elastomers
Ioana Chiulan
National Institute for Research & Development in Chemistry and Petrochemistry – ICECHIM, Romania
S
ilicone rubbers are one of the most important polymers, because they possess important properties, such as biocompatibility,
large degree of flexibility, hydrophobicity, high gas permeability, high thermal stability, good UV and oxidative resistance.
However, pure silicone rubber has poor tensile strength, which limits its practical applications. To overcome this drawback,
different inorganic fillers were incorporated such as nano-SiO
2
, carbon nanotube, nano-Al
2
O
3
, clay and so on. The aim of this
work was to obtain composites based on liquid silicone rubber and hydrophilic nanosilica (HDK N
2
0), with good flexibility
and tensile strength, as potential biomaterials for pelvic prosthesis. Nanosilica particles were selected as reinforcing filler due
its extraordinary properties, such as a very high specific surface area, biocompatibility, high elastic modulus, low density and
low material cost. This paper reports the impact of the filler content and sample thickness on the morphology, rheological
properties, thermal behavior and tensile strengths before and after flexing tests of the silicone-nanosilica composites. The
addition of the nanosilica content up to 3% conducted to a significant increase of the young modulus and the tensile strength.
Biography
Ioana Chiulan has completed his PhD in 2011, from University Politehnica of Bucharest, in the field of thermoresponsive hydrogels. He has an experience of more
than 10 years as researcher and her work is focused on different materials for biomedical or packaging applications. He is co-author in more than 19 papers and
one book chapter. Raluca Gabor, Cristian Nicolae, Denis Panaitescu and Adriana Frone are highly skilled researchers, specialized in thermal, mechanical and
morphological characterization. Elena Radu and Sergiu Stoian are recently graduated students from University Politehnica of Bucharest.
ioana.chiulan@icechim-rezultate.ro