Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1886022 | Radiation Physics and Chemistry | 2014 | 15 Pages |
Abstract
The lower transverse mechanical properties of radiation-cured acrylate-based composites reinforced with carbon-fibre with respect to the thermosettable analogues was investigated from the viewpoint of chemical interactions at the interface between the matrix and the carbon material. XPS analysis of representative commercial carbon fibres revealed the presence of a significant amount of chemical functions potentially exerting an adverse effect on the initiation and propagation of the free radical polymerization initiated under high energy radiation. The EB-induced polymerization of n-butyl acrylate as a simple model monomer was conducted in the presence of various aromatic additives exhibiting a strong inhibiting effect, whereas thiols efficiently sensitize the initiation mechanism and undergo transfer reactions. A method based on the surface modification of sized fibres by thiomalic acid is proposed for overcoming the localized inhibition phenomenon and for improving the mechanical properties of the resulting acrylate-based composites.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Arnaud Martin, Dorota Pietras-Ozga, Philippe Ponsaud, Christelle Kowandy, Mariusz Barczak, Brigitte Defoort, Xavier Coqueret,