Título: | DEVELOPMENT OF AN AFFORDABLE DROPLET SHAPE ANALYSIS SYSTEM FOR THE EVALUATION OF SURFACE PROPERTIES AND SURFACE MODIFICATION OF POLYAMIDE TO ACHIEVE A SUPERAMPHIPHOBIC SURFACE | ||||||||||||
Autor: |
AYRTON ALEF CASTANHEIRA PEREIRA |
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Colaborador(es): |
JOSE ROBERTO MORAES D ALMEIDA - Orientador |
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Catalogação: | 14/JAN/2025 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=69161&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=69161&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.69161 | ||||||||||||
Resumo: | |||||||||||||
Polymeric superamphiphobic surfaces have attracted great interest within the
scientific community and industry because they combine all the advantageous
characteristics of polymers with unique surface properties, such as liquid repellency
and self-cleaning. A variety of polymers have potential for use in applications that
require superamphiphobic surfaces, among them polyamide (PA). Although water
repellency can be easily achieved, the production of oil-repellent materials is more
difficult due to oil low surface tension. Just like any advance in research and
development, progress in polymeric superamphiphobic surfaces requires
characterization. A fast way to characterize superamphiphobicity is measuring the
contact angle of a drop shape in touch with the surface. Despite advances in
computing and optical devices, the use of optical methods for an accurate, robust
and in-depth evaluation of interfacial properties is still limited. Thus, the present
work had two development fronts: (i) build an accessible, versatile and reliable
droplet shape analysis system for the evaluation of surface properties, and (ii)
modify the polyamide surface to reach superamphiphobicity by a simple and
industrially viable fabrication/modification method. Regarding the first work front,
a free and complete solution for drop research, called ZeDrop, was created.
Regarding the second work front, an amphiphobic surface on PA 6 was achieved
by combining an adequate roughness, obtained by the application of a coating
formed by nanoparticles and polymeric binder, and a low surface energy, resulting
from the activation of the surface by UVO prior to its fluorosilanization.
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