| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9817828 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2005 | 7 Pages |
Abstract
Characterization of irradiated polymer-blends has been performed by 19F solid-state NMR spectroscopy, thermal analysis and so on. By DSC analysis, the heat of crystallization (ÎHc) of both irradiated polymer-blends were decreased with increase in absorbed dose. Moreover, the melting and crystallization temperatures of both materials shift to lower temperatures, compared with crosslinked PTFE. The obtained materials showed the lower crystallinity. By 19F solid-state NMR spectroscopy, the new signals appeared at around â160Â ppm and at â188Â ppm. The signals are assigned to the fluorine signals of CF groups, which represent crosslinking sites with Y-type (>CF-) and Yâ²-type (>CCF-) in the polymer-blend chains. Thus, it is confirmed that the polymer-alloys with good performance based on PTFE are synthesized through the radiation crosslinking reaction between PTFE and PFA or FEP molecules.
Related Topics
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Materials Science
Surfaces, Coatings and Films
Authors
Akihiro Oshima, Fumihiro Mutou, Toshiyuki Hyuga, Saneto Asano, Shogo Ichizuri, Jingye Li, Takaharu Miura, Masakazu Washio,