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Volume 4
Nano Research & Applications
ISSN: 2471-9838
Notes:
JOINT EVENT
October 04-05, 2018 Moscow, Russia
&
2
nd
Edition of International Conference on
26
th
International Conference on
Advanced Nanotechnology
Materials Technology and Manufacturing Innovations
Advanced Nanotechnology 2018
& Materials-Manufacturing 2018
October 04-05, 2018
Page 54
Rodney Marcelo do Nascimento
São Carlos Institute of Physics - University of São Paulo, Brazil
Rodney Marcelo do Nascimento, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C5-020
Growing of apatite particles on surfaces of natural rubbers and their effects on blood wettability
T
his work addresses a study of the interaction between hybrid Natural Rubber (NR) surfaces and a Simulated Body
Fluid (SBF) aiming to access desirable properties to exploit the applications as bioactive coatings. The surfaces were
physico chemically modified during 30 days in contact with SBF. The formation of calcium phosphate particles on NR
coatings occurs due to the electrostatic interaction between negatively charged layer along the NR surface (– 57 mV)
and Ca
2+
thus inducing the nucleation of Ca based salts, especially with phosphate ions (PO
4
3-
). The apatite then grew
spontaneously accompanied by consuming the calcium and phosphate ions. Various ions (e.g., Ca
2+
, CaOH
+
, PO
4
3-
,
HPO
4
2-
and CaH
2
PO
4+
) on the surfaces can enable the adsorption ability of the protein and some chemicals in the human
blood. The increase of the blood wettability was attested by contact angle and contact radius measurements. On the
other hand, the hybrid NR coating exhibited both stability and biodegradability in different levels (time dependence).
These features make the material a candidate for tissue engineering, for instance to provide a functionalized surface
applicable as an occlusive membrane, bioactive coating and (or associated with) scaffolds.
Biography
Rodney Marcelo do Nascimento has completed his PhD in 2011 from Universidade Estadual Paulista UNESP, Brazil and Postdoctoral studies from Uni-
versité Claude Bernard Lyon, France in 2015. He has published nine papers as first author in reputed journals and has been serving as a Reviewer Board
Member of the
International Journal of Nanomedicine
since 2017. He has received an award in Surface Engineering from the National Institute of Surface
Engineering – Conselho Nacional de Desenvolvimento Científico e Tecnológico-CNPq, Brazil, 2013. Currently, he works in the development and hybrid
materials using natural polymers and bioactive particles for biomedical applications in University of São Paulo.
.
rodneymn@ifsc.usp.br