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Artículo

Chemical and morphological surface modification of epoxy based thermosets

Penoff, Marcela ElisabethIcon ; Oyanguren, Patricia AngelicaIcon ; Schreiner, Wido; Montemartini, Pablo EzequielIcon
Fecha de publicación: 07/2013
Editorial: Scientific Research Publishing
Revista: Materials Sciences and Applications
ISSN: 2153-117X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Recubrimientos y Películas; Físico-Química, Ciencia de los Polímeros, Electroquímica

Resumen

Recently developed low fluorine containing polymers are advanced materials which confer advantageous properties to surfaces at a lower cost than conventional fluoropolymers (like PTFE), and are also more easily processable. Fluoropolymer surfaces are characterized by a low surface energy, high oleo and hydrophobicity, low coefficients of friction, among many other properties. This makes them desired materials in microelectronics, antifogging, antifouling and medical applications, to name a few. Fluorinated compounds are not easily coupled with macromolecules or com-mon organic systems, and great efforts are made to compatibilize fluorinated species with hydrocarbon polymers. In this work, two chemical routes were explored in order to incorporate perfluorinated alkyl chains in an epoxy ? amine based thermoset. On one side, a perfluoroalkyl thiolated molecule was used as a stabilizing ligand for silver nanoparti-cles, which were incorporated in the matrix polymer. On the other hand, fluorinated chains containing epoxy function-alities, were used as the matrix modifier. In the first case, fluorinated chains covering the nanoparticles, were mixed with the matrix, while in the second case, the fluoroalkyl chains were chemically linked to the network. Fluorine migration to the air ? polymer interface was confirmed by X-Ray photoelectron spectroscopy (XPS). The ma-terials hydrophobicity was then studied in terms of their contact angle with water (CA), as a function of the surface composition and the topography. Scanning electron microscopy (SEM) and atomic force microscopy (AFM), operated in moderate and light tapping modes, were used to morphologically describe the surfaces. An exhaustive surface analy-sis was made in order to explain the different hydrophobicity grades found.
Palabras clave: FLUOROPOLYMER , NANOPARTICLES , THERMOSET , SURFACE , HYDROPHOBIC
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/2726
URL: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=34833
DOI: http://dx.doi.org/10.4236/msa.2013.47A2001
Colecciones
Articulos(CCT - MAR DEL PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Penoff, Marcela Elisabeth; Oyanguren, Patricia Angelica; Schreiner, Wido; Montemartini, Pablo Ezequiel; Chemical and morphological surface modification of epoxy based thermosets; Scientific Research Publishing; Materials Sciences and Applications; 4; 7A2; 7-2013; 1-9
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