Abstract
Thiol functionalities were grafted at the surface of carbon fibers in order to improve the adhesion strength with an acrylate matrix photo-cured by ultraviolet light via a thiol-ene reaction. As revealed by X-ray photoelectron spectroscopy, the grafting was achieved by a reaction between propylene sulfide and the hydroxyl groups located at the surface of the fiber, with the presence of triethylamine. A significant improvement of the interfacial shear strength, measured by a micromechanical test derived from the pull-out test, was obtained (+18%). Generating covalent bonding between the carbon fiber surface and a thermoset polymerizing through a radical mechanism by grafting a chain transfer agent seemed to be an efficient way to improve adhesion strength at the interface.
| Original language | English |
|---|---|
| Pages (from-to) | 12-21 |
| Number of pages | 10 |
| Journal | Applied Surface Science |
| Volume | 286 |
| DOIs | |
| State | Published - Dec 1 2013 |
| Externally published | Yes |
Funding
ANRT (Association Nationale de la Recherche et de la Technologie) is gratefully acknowledged for the PhD grants assigned to F. Vautard. The gratitude of the authors is fully expressed to P. Ponsaud (Laboratoire de Chimie Organique et Macromoléculaire, Université de Lille, France) and Professor X. Coqueret (Institut de Chimie Moléculaire de Reims, Université de Reims Champagne Ardenne, France) regarding their contribution to this work. Ciba ® is sincerely thanked for supplying the photoinitiator used in this study.
| Funders | Funder number |
|---|---|
| Association Nationale de la Recherche et de la Technologie |
Keywords
- Acrylate resin
- Carbon fibers
- Fiber/matrix bond
- Interface
- Polymer-matrix composites (PMCs)
- Thiol-ene reaction