English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/34196
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 7 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)
Título

Novel aromatic polyamides with 1,3-benzoazole groups in the main chain. 1. Polymers derived from 2-(4-carboxyphenyl) benzoxazole-5- and 6-carboxylic acids. Synthesis and characterization

Autor Marcos-Fernández, Ángel ; Lozano, Ángel E.; Abajo González, Javier de ; Campa, José G. de la
Palabras clave Aromatic polyamides
Polybenzoxazoles
In situ silylation
Fecha de publicación sep-2001
EditorElsevier
Citación Polymer 42(19): 7933-7941 (2001)
ResumenTwo series of aromatic poly(amide-benzoxazole)s have been obtained from 5-chlorocarbonyl-2-(4-chlorocarbonylphenyl)benzoxazole (NBOC) and 6-chlorocarbonyl-2-(4-chlorocarbonylphenyl)benzoxazole (OBOC). NBOC and OBOC were synthesized by a three-step process with high yields, and they were reacted with aromatic diamines by using the in situ silylation method which yielded polymers of high inherent viscosities. The solubility of these polymers was similar to that of aromatic polyamides, being soluble in aprotic polar solvents. All polymers could be processed to tough, creasable amorphous films with good mechanical properties, the values of tensile strength ranging from 92 to 113 MPa with moduli above 2 GPa. The glass transition temperatures were above 300°C, whilst the onset of thermal degradation ranged from 455 to 515°C. A theoretical study was also done, by means of computational chemistry methods, to relate the orientation of the benzoxazole ring in both series with monomer reactivity and polymer properties.
Descripción 9 páginas, 4 esquemas, 5 tablas.
Versión del editorhttp://dx.doi.org/10.1016/S0032-3861(01)00316-0
URI http://hdl.handle.net/10261/34196
DOI10.1016/S0032-3861(01)00316-0
ISSN0032-3861
Aparece en las colecciones: (ICTP) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.