Surface modification of nanoparticles for radiation curable acrylate clear coatings

Autor:	Reiner Mehnert, Eberhard Hartmann, Frank Bauer, H.-J. Gläsel, E. Bilz
Rok vydání:	2003
Předmět:	Nuclear and High Energy Physics Acrylate Materials science Nanocomposite Silylation Abrasion (mechanical) Nanoparticle Silane chemistry.chemical_compound Monomer chemistry Polymer chemistry Surface modification Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 208:267-270
ISSN:	0168-583X
Popis:	To obtain transparent, scratch and abrasion resistant coatings a high content of nanosized silica and alumina filler was embedded in radiation-curable acrylate formulations by acid catalyzed silylation using trialkoxysilanes. 29SiMAS NMR and MALDI-TOF mass spectrometry were employed to elucidate the structure of the surface-grafted methacryloxypropyl-, vinyl- and n-propyl-trimethoxysilane. In accordance with NMR findings, MALDI-TOF MS showed highly condensed oligomeric siloxanes of more than 20 monomeric silane units. A ladder-like structure of bound polysiloxanes is proposed rather than a simplified picture of tridentate silane bonding. Hence, silane coupling agents do not only modify the chemical nature of the filler surface but also strongly effect the rheological properties of the acrylate nanodispersions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f81d34ca4653d2c64cb50ca4ae4c6fc5 https://doi.org/10.1016/s0168-583x(03)00617-7 Zobrazit plný text záznamu Full Text from ScienceDirect