Modification of polytetrafluoroethylene by electron beam irradiation in various atmospheres

The changes in the chemical structure of polytetrafluoroethylene (PTFE) induced by electron beam irradiation in vacuum and in ammonia gas atmosphere have been investigated by means of Fourier-transform infrared (FTIR) spectroscopy. Double bonds and trifluoromethyl branches are formed by irradiation...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 1999-05, Vol.151 (1), p.222-226
Hauptverfasser: Lappan, Uwe, Geißler, Uwe, Lunkwitz, Klaus
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container_title Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms
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creator Lappan, Uwe
Geißler, Uwe
Lunkwitz, Klaus
description The changes in the chemical structure of polytetrafluoroethylene (PTFE) induced by electron beam irradiation in vacuum and in ammonia gas atmosphere have been investigated by means of Fourier-transform infrared (FTIR) spectroscopy. Double bonds and trifluoromethyl branches are formed by irradiation in vacuum. The CF 3 branching is enhanced distinctly by irradiation at elevated temperature above the melting point of PTFE. After irradiation in ammonia gas atmosphere ammonium fluoride salt was detected in the irradiated fluoropolymers.
doi_str_mv 10.1016/S0168-583X(99)00115-9
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ispartof Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 1999-05, Vol.151 (1), p.222-226
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subjects Electron beam irradiation
Modification
Polytetrafluoroethylene
PTFE
title Modification of polytetrafluoroethylene by electron beam irradiation in various atmospheres
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