Repositorio Institucional
Repositorio Institucional
CONICET Digital
  • Inicio
  • EXPLORAR
    • AUTORES
    • DISCIPLINAS
    • COMUNIDADES
  • Estadísticas
  • Novedades
    • Noticias
    • Boletines
  • Ayuda
    • General
    • Datos de investigación
  • Acerca de
    • CONICET Digital
    • Equipo
    • Red Federal
  • Contacto
JavaScript is disabled for your browser. Some features of this site may not work without it.
  • INFORMACIÓN GENERAL
  • RESUMEN
  • ESTADISTICAS
 
Artículo

Tautomerizable styrenic copolymers confined in AAO templates

Giussi, Juan MartínIcon ; Blaszczyk Lezak, Iwona; Allegretti, Patricia Ercilia; Cortizo, Maria SusanaIcon ; Mijangos Ugarte, Carmen
Fecha de publicación: 08/2013
Editorial: Elsevier
Revista: Polymer
ISSN: 0032-3861
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Físico-Química, Ciencia de los Polímeros, Electroquímica

Resumen

The aim of this work is to prepare new keto-enol tautomerizable polystyrene copolymer nanofibers, by infiltrating the polymer into nanoporous anodized aluminum oxide (AAO) nanocavities, and to examine the influence of confinement effects on the polymer properties of nanostructured polymers in comparison to the bulk. The interest of this work lies, on the one side, on the presence of tautomeric groups that could lead to discriminate against specific substrates and, therefore, could make them interesting in biomedicine. And, on the other hand, on the topographic characteristic of oriented nanofibrous structures that could be convenient for cell regeneration. In this work nanostructured keto-enol tautomerizable polystyrene copolymer nanofibers, i.e. Styreneco- 2-methyl-3-oxo-5-phenyl-4-pentenonitrile (St-co-MOP) of different chemical composition, have been prepared under soft infiltration conditions of the polymer into AAO templates. For all compositions, SEM images show stacked nanofibers reproducing the dimensions of AAO nanopores and Raman confocal spectroscopy of the samples, confirms the homogenous chemical distribution of nanofibers through all the length of AAO pores. The glass transition temperature values for St-co-MOP copolymer nanofibers inside AAO nanocavities determined by differential scanning calorimetry are higher than those corresponding to the bulk copolymers. From thermograms of nanofibers obtained by thermo gravimetric analysis (TGA), in an air atmosphere, the existence of two thermal peaks is observed, the second one probably caused by the presence of tautomeric forms in the copolymers. Moreover, the elastics moduli found for the bulk copolymers are consistent with their employment for building extracellular matrices. In summary, this study clearly demonstrates the feasibility of producing nanofibers from styrene-co-2-methyl-3-oxo-5-phenyl-4-pentenonitrile (St-co-MOP) tautomeric polymers with a high degree of homogeneity and appropriate thermal and mechanical properties. Furthermore, preliminary results for tautomeric copolymers do not show cytotoxic effects, indicating that the obtained nanostructured copolymer combines several relevant properties required for its future applications as a biomaterial for cell scaffolds.
Palabras clave: AAO TEMPLATES , NANOSTRUCTURED SCAFFOLDS , TAUTOMERIC COPOLYMERS
Ver el registro completo
 
Archivos asociados
Thumbnail
 
Tamaño: 2.130Mb
Formato: PDF
.
Descargar
Licencia
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/11336/5105
URL: http://www.sciencedirect.com/science/article/pii/S0032386113005880
DOI: http://dx.doi.org/10.1016/j.polymer.2013.06.040
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Citación
Giussi, Juan Martín; Blaszczyk Lezak, Iwona; Allegretti, Patricia Ercilia; Cortizo, Maria Susana; Mijangos Ugarte, Carmen; Tautomerizable styrenic copolymers confined in AAO templates; Elsevier; Polymer; 54; 18; 8-2013; 5050-5057
Compartir
Altmétricas
 

Enviar por e-mail
Separar cada destinatario (hasta 5) con punto y coma.
  • Facebook
  • X Conicet Digital
  • Instagram
  • YouTube
  • Sound Cloud
  • LinkedIn

Los contenidos del CONICET están licenciados bajo Creative Commons Reconocimiento 2.5 Argentina License

https://www.conicet.gov.ar/ - CONICET

Inicio

Explorar

  • Autores
  • Disciplinas
  • Comunidades

Estadísticas

Novedades

  • Noticias
  • Boletines

Ayuda

Acerca de

  • CONICET Digital
  • Equipo
  • Red Federal

Contacto

Godoy Cruz 2290 (C1425FQB) CABA – República Argentina – Tel: +5411 4899-5400 repositorio@conicet.gov.ar
TÉRMINOS Y CONDICIONES