The formation and study of poly(ethylene oxide)-poly(norbornene) block-copolymers on the surface of titanium-dioxide particles: a novel approach towards application of si-ROMP to larger surface modification
CAO, Edgar
Laboratoire de Chimie des Polymères Organiques [LCPO]
Institute for Nanotechnology [Waterloo]
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Laboratoire de Chimie des Polymères Organiques [LCPO]
Institute for Nanotechnology [Waterloo]
CAO, Edgar
Laboratoire de Chimie des Polymères Organiques [LCPO]
Institute for Nanotechnology [Waterloo]
Laboratoire de Chimie des Polymères Organiques [LCPO]
Institute for Nanotechnology [Waterloo]
HÉROGUEZ, Valérie
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des Polymères Organiques [LCPO]
< Leer menos
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des Polymères Organiques [LCPO]
Idioma
en
Article de revue
Este ítem está publicado en
Polymer Chemistry. 2016, vol. 7, n° 15, p. 2751-2758
Royal Society of Chemistry - RSC
Resumen en inglés
Ring-opening metathesis polymerization, or ROMP, has been known in the world of polymers as a success story. With its discovery in the middle of the 20th century, the study and understanding of this reaction led to its ...Leer más >
Ring-opening metathesis polymerization, or ROMP, has been known in the world of polymers as a success story. With its discovery in the middle of the 20th century, the study and understanding of this reaction led to its adoption in a multitude of areas in both academic and industrial domains. However, with the general shift towards hybrid materials and better material integration, surface-initiated polymerization (SIP) has been an area of great interest that ROMP has only tapped into at the very end of the 20th century. With this point in mind, we demonstrate another pathway towards SIP using the si-ROMP approach to form block-copolymers of poly(ethylene-oxide)-poly(norbornene) (PEO-PNB) brushes on particles of titania. In this study, particle modification was first performed and studied, which was then applied towards coating larger, curved tubes to assess their ability for surface modification. In the case of particles, each step was analyzed by XPS to ensure that the expected elements appeared. TGA was then implemented to determine the general grafting density of the PEO chains on the surface, which was found to be 2.7 molecules per nm(2). TGA could also determine the degree of polymerization (DP) of the polynorbornene chain, which was 12 500. Finally, SEM was used to image the final products, both film formation using particles, and after use of these particles as a surface coating to cover larger surface areas for surface modification. The functionalized titania particles are determined to be an interesting candidate material for a "seed" layer, which can be used for larger surface modification.< Leer menos
Palabras clave en inglés
MEMBRANES
NOBEL LECTURE
OXIDE NANOPARTICLES
BRUSHES
MONOLAYERS
OPENING METATHESIS POLYMERIZATION
MEDIATED RADICAL POLYMERIZATION
OLEFIN-METATHESIS
INITIATED POLYMERIZATION
GLYCOL)
Orígen
Importado de HalCentros de investigación