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conferenceseries
.com
Volume 5, Issue 6 (Suppl)
J Mat. Sci.
ISSN: 2321-6212
Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13
TH
INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
Optimizing the properties of TiO
2
nanomaterials used as UV-blockers in sunscreen to maximize the
efficiency and safety of the final product
Jerome Labille, Slomberg D and Catalano R
Aix-Marseille University, France
A
mong nanotechnology-based products, sunscreens are of emerging concern. Nanometric Titanium Dioxide (TiO
2
) UV-
blockers are advantageous in terms of sun protection and aesthetics. However, from a regulatory perspective, their fate
and impact are still under consideration, due to their potential influence on both consumers and the environment. At present,
many gaps remain in the scientific knowledge regarding the efficacy and safety of nanomaterials used in sunscreen. Nanometric
TiO
2
minerals are largely used in sunscreen since they are efficient and transparent UV blockers with both light scattering and
absorption properties. Froman optical aspect, little is known regarding the size and structural characteristics of the nanoparticle
that optimize the resulting sunscreen. We studied this aspect by varying TiO
2
primary particle size, structure, coating and
concentration, using both nanomaterials currently on the market and those synthesized in-house. Our work aimed to optimize
the properties of the UV blockers prior to their integration into a cosmetic formulation. Both the absorbing and scattering
properties of the UV-blocker were optimized in order to get the highest Sun Protection Factor (SPF) and transparency on the
cream prepared on purpose. The resulting sunscreens were characterized in terms of structure (nanomaterial dispersion in the
emulsion) and this was related to the (SPF). The consequences of these characteristics on the overall risk of the product were
also studied considering the entire lifecycle. Release and fate of the nanomaterial upon sunscreen aging were characterized and
quantified.
Biography
Jerome Labille has completed his PhD in Environmental Geosciences. He is a Research Senior Scientist at French National Scientific Research Center CNRS in
CEREGE lab (Aix-Marseille University, France). He is expert in the physical chemistry of aggregation, dispersion and deposition of nanoparticles in liquid systems
and porous media. He coordinates the National Research Program Eco-SUN focused on the elaboration of safe by design sunscreen. He has published more than
40 papers in reputed journals.
labille@cerege.frJerome Labille et al., J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-008