This presentation concerns the stability of radicals generated in poly(ethylene-alt-tetrafluoroethylene) (ETFE) film by electron irradiation prior to grafting of styrene onto this base material. It has been demonstrated that the grafting yield decreases as the storage time of the irradiated film increases, and by ESR this has been shown to be due to decay of the polymerization-initiating radicals in the film material. The decay rate is found to depend on the storage temperature, and it may also depend on the type of radicals present in the film. Furthermore the conducted investigations have shown that the radicals are almost entirely consumed in the grafting process.
|Number of pages||1|
|Publication status||Published - 2008|
|Event||14th International Conference on Solid State Protonic Conductors - Kyoto, Japan|
Duration: 7. Sep 2008 → 11. Oct 2008
Conference number: 14
|Conference||14th International Conference on Solid State Protonic Conductors|
|Period||07/09/2008 → 11/10/2008|
- Radicals, peroxy radicals, radical stability, radical lifetime, ESR, EPR, electron irradiation, fluoropolymer, fuel cell, membrane, grafting, polystyrene
Larsen, M. J., Ma, Y., Qian, H., Nielsen, H. T., Lund, P. B., & Skou, E. M. (2008). Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes. Poster session presented at 14th International Conference on Solid State Protonic Conductors, Kyoto, Japan.