English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/153634
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Influence of Poly(ε-caprolactone) Molecular Weight and Coumarin Amount on Photo-Responsive Polyurethane Properties

AutorSalgado, Cástor; Arrieta, Marina P.; Peponi, Laura ; Fernández-García, Marta ; López, Daniel
Palabras clavePhotoreversible
Polyurethane
PCL
Coumarin
Mechanical properties
Fecha de publicación2017
EditorJohn Wiley & Sons
CitaciónMacromolecular Materials and Engineering 302 (2017)
ResumenPhoto-reversible polyurethane (PU) coatings based on coumarin diol (CD) are obtained. Initially, pre-polymers based on different amounts of coumarin (5, 15, and 25 mol%) and 1,6-hexamethylene diisocyanate are prepared to obtain PUs with a large incorporation of CD and high molecular weight. The pre-polymer is posterior reacted with poly(ε-caprolactone) diol (PCL-diol), either with molecular weight (Formula presented.) = 530 or 2000 g mol. The thermal stabilities of the PUs are studied using thermogravimetric analysis. Polymers with a higher content of CD present higher stability. The thermal transitions and the mechanical response are analyzed using differential scanning calorimetry and strain-stress tests, respectively. Moreover, the photo-reversibility of CD-based PUs is followed by UV absorption. In general, photo-dimerization induces better mechanical properties of the final PUs. Materials obtained with short PCL-diol ((Formula presented.) = 530 g mol) and the highest amount of CD present higher reversibility processes. Therefore, these polymers are promising for application as coating systems. (Figure presented.).
Versión del editorhttp://dx.doi.org/10.1002/mame.201600515
URIhttp://hdl.handle.net/10261/153634
DOI10.1002/mame.201600515
Identificadoresdoi: 10.1002/mame.201600515
issn: 1438-7492
e-issn: 1439-2054
Aparece en las colecciones: (ICTP) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


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