Banca de QUALIFICAÇÃO: ANDERSON GOMES VIEIRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : ANDERSON GOMES VIEIRA
DATE: 13/02/2023
LOCAL: Programa de Pós-Graduação em Ciência de Materiais
TITLE:
KEY WORDS:

photopolymerizable nanocomposites; 3D printing; self-decontaminating materials; magnetic spicules.

PAGES: 99
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

Materials science has been evolving, and with the development of new materials, new applications arise, mainly based on nanomaterials or nanostructured materials, such as the architecture and production of surfaces capable of inactivating viruses. The development of printable nanocomposites made from photopolymerizable resins and nanomaterials with antiviral properties has been the focus of one of the main lines of research carried out in the LandFoton laboratory of the DQF, within the scope of the RIMA Network in which this thesis is inserted, through the CAPES Notice of Prevention and Combating Outbreaks, Endemics, Epidemics and Pandemics. Within this line and in the pandemic scenario in which these works began and which lasts until the present, this work aimed to develop printable materials to inactivate viruses through synthesized nanospikes around magnetic nanoparticles to direct them to the surface of a photopolymerizable nanocomposite capable of printing 3D parts with details in microscopic resolution. The methodology adopted was the extraction of magnetic nanoparticles acquired or coming from ferrofluids and which were encapsulated with silica in a star-shaped format, with the aim of the spicules of this format being able to perforate the viral capsid. These were dispersed to commercial photopolymerizable resins and printed in different formats from STL files, to evaluate the preservation of their printing parameters in the printers used, with 3D printing technology by stereolithography via digital mask for UV projection. The samples were characterized using optical, atomic force (AFM) and scanning electron (SEM) microscopy with X-ray detector for energy dispersive spectroscopy (EDX) technique. From the results obtained up to this stage of qualification, it is noteworthy that it was possible to prepare the nanocomposite without affecting the printability, directing the nanoparticles to the surface at the time of printing, in addition to coating the nanoparticles with silica, it is also feasible, it is still necessary to obtain the desired starred format for the viral inactivation tests, which are being started in collaboration with Fiocruz for this line of Network research. 

COMMITTEE MEMBERS:
Interna - 2199290 - BEATE SAEGESSER SANTOS
Interno - 1754300 - BRAULIO SILVA BARROS
Presidente - 2457389 - EDUARDO PADRON HERNANDEZ