UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-23 18:32
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Conference: Bucharest University Faculty of Physics 2016 Meeting


Section: Optics, Spectroscopy, Plasma and Lasers


Title:
Tunability of the surface morphology of plcl-peg-plcl co-polymer coatings deposited by matrix assisted pulsed laser evaporation


Authors:
Simona BRAJNICOV(1,2) , Valentina MARASCU(1,3), Valentina DINCA(1) and Maria DINESCU(1)


Affiliation:
1) National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, PO Box MG-16, RO-077125, Magurele, Bucharest, Romania

2) University of Craiova, Faculty of Mathematics and Natural Sciences, RO-200585, Craiova, Romania

3) University of Bucharest, Faculty of Physics, RO–077125, Magurele, Romania



E-mail
simonabrajnicov@yahoo.com


Keywords:
copolymer, orthopedic implant, MAPLE


Abstract:
For many applications in the field of biomedical research and tissue engineering, particularly in the development of metallic orthopedic implants , one of the main challenges is the creation of complex coatings with specific properties allowing acceptance into the organism without the risk of infections. In this work we report on the synthetic biodegradable poly(lactide-co-caprolactone)-block-poly(ethylene-glycol)-block-poly(lactide-co-caprolactone) (PLCL-PEG-PLCL) co-polymer thin films preparation using a laser based technique: Matrix Assisted Pulsed Laser Evaporation (MAPLE). The deposition parameters were optimized for coatings by varying the laser fluence and the target composition. The structure and morphology of the deposited layers were investigated by Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM), respectively. FTIR studies show that the main functional groups of the deposited material are not altered by the deposition process for a certain range of incident laser fluence values. AFM studies reveal that the morphological properties of the coatings (homogeneity, density, roughness) are related to laser parameters and target concentration. Our approach proved to be viable for obtaining complex coatings for metallic orthopedic implants.


Acknowledgement:
This work was supported by Romanian National Authority for Scientific Research (CNCS–UEFISCDI), under the projects PNII- PT-PCCA-2013-4-199 and PN-II-RU-TE-2014-4-2434