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Radiostability of polybenzoxazoles. Comparison of stability of molecular ions of model compounds in mass spectrometry with resistance of the polymers to ionizing radiations
Author(s) -
Despax B.,
Paillous N.,
Lattes A.,
Paillous A.
Publication year - 1982
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1982.070270123
Subject(s) - mass spectrometry , kapton , polymer , ion , irradiation , ionizing radiation , materials science , molecular mass , analytical chemistry (journal) , chemistry , nuclear chemistry , polymer chemistry , organic chemistry , chromatography , polyimide , nanotechnology , composite material , physics , nuclear physics , layer (electronics) , enzyme
Various benzoxazoles were synthesized and investigated by mass spectrometry. The relative stabilities of their molecular ions were used in the search for radiostable polybenzoxazoles (PBO). The three polybenzoxazoles corresponding to the three bibenzoxazoles previously investigated were irradiated by 900 ke V electrons, and their aging was followed in situ by optical measurements. The most radiostable polymer coresponds to the model compound (diphenylbibenzoxazole), which is characterized by the highest degree of conjugation and by the lowest number of fragmentations in mass spectrometry. The resistance of this new polymer to electron irradiation is better than that of Teflon FEP or Kapton H.