English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/150575
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:

Study of the effect of the incorporation of TiO2 nanotubes on the mechanical and photodegradation properties of polyethylenes

AutorZenteno, A.; Lieberwirth, Ingo; Catalina, Fernando ; Corrales, Teresa ; Guerrero, S. ; Vasco, D. A.; Zapata, Paula A.
Palabras clavePolymer-matrix composites (PMCs)
Mechanical properties
Dynamic properties
Fecha de publicación2017
CitaciónComposites Part B: Engineering 112: 66-73 (2017)
ResumenTiO nanotubes (TiO-Ntbs) synthesized by a hydrothermal method with a diameter of ca. 5 nm were used as filler to prepare polyethylene (PE) and linear low density polyethylene (LLDPE) composites by melt blending. Nanotubes were used either as synthesized or organically modified with hexadecyltrimethoxysilane (Mod-TiO-Ntbs). In some cases nanoparticles form secondary structures with sizes around 100 nm and agglomerates larger than 2 μm are also seen by transmission electron microscopy (TEM). In terms of mechanical properties, the addition of TiO-Ntbs resulted in a composite, LLDPE/TiO-Ntbs, with improved properties. Compared with the pure polymer, Young's modulus increased by ca. 50%, while yield stress increased by ca. 35%. On the other hand, PE/Mod-TiO-Ntbs and LLDPE/Mod-TiO-Ntbs with 5 wt% filler loading showed higher E′ values in the storage modulus at low temperatures than either neat PE and LLDPE. The photodegradation properties of the PE/Mod-TiO-Ntbs and LLDPE/Mod-TiO-Ntbs composites were studied. The largest increase of chemiluminescence emission (CL) and carbonyl index (CI) was found for LLDPE/Mod-TiO-Ntbs during photoaging. That behavior may be due to large branching of the polymer, and to the presence of the nanotubes incorporated into the LLDPE, which promoted and accelerated its photodegradation due to reactive species generated during irradiation.
Versión del editorhttp://dx.doi.org/10.1016/j.compositesb.2016.12.007
Identificadoresdoi: 10.1016/j.compositesb.2016.12.007
issn: 1359-8368
Aparece en las colecciones: (ICTP) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
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.