| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Smith, Paul A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2018Microwave filters based on novel dielectric split-ring resonators with high unloaded quality factorscitations
- 2015Late-stage fatigue damage in a 3D orthogonal non-crimp woven composite: an experimental and numerical studycitations
- 2014Developing toughened aromatic polybenzoxazines using thermoplastic oligomers and telechelics, part 1:Preparation and characterization of the functionalized oligomerscitations
- 2014Developing toughened aromatic polybenzoxazines using thermoplastic oligomers and telechelics, part 1citations
- 2014Toughening mechanisms in aromatic polybenzoxazines using thermoplastic oligomers and telechelicscitations
- 2013Structure and microwave dielectric properties of low firing Bi2Te2W3O16 ceramicscitations
Places of action
| Organizations | Location | People |
|---|
article
Toughening mechanisms in aromatic polybenzoxazines using thermoplastic oligomers and telechelics
Abstract
<p>2,2-Bis(3,4-dihydro-3-phenyl-2H-1,3-benzoxazine)propane (BA-a) is blended with oligomers of polyarylsulfone (PSU) and polyarylethersulfone (PES) of different low/intermediate molecular weights (3000-12 000 g mol<sup>-1</sup>) and terminal functionality (chloro-, hydroxyl- or benzoxazinyl- (Bz)). Fracture toughness (K<sub>IC</sub>) is observed to increase from 0.8 MPa m<sup>0.5</sup> for cured BA-a to 1 MPa m<sup>0.5</sup> with the incorporation of 10 wt % PSU-Bz (12 000 g mol<sup>-1</sup>). Generally, greater improvements in K<sub>IC</sub> are observed for the PES oligomers compared with the PSU oligomers of equivalent molecular weight. The terminal functionality of the thermoplastic has a lesser effect on improving toughness than increasing the molecular weight or the nature of the polymer backbone. Surface analysis of the fractured surfaces show greater phase separation and crack pinning in the PES toughened system. Where crack pinning is less obvious, as in the case of hydroxyl-terminated PES (of 6000 g mol<sup>-1</sup>), this coincides with a drop in fracture toughness.</p>