Autor: Przybytniak, G. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Model studies on phenolic antioxidant role in radiation - and thermally - induced accelerated degradation of electrical cable insulation
Autorzy:: Boguski, J.
Przybytniak, G.
Mirkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/146778.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: antioxidant
radiation
degradation
aging
polyethylene
Irganox 1035
Opis:: The main objective of this work was to establish a correlation between radiation- and thermally-induced changes in polyethylene and the amount of compounded phenolic antioxidant (Irganox 1035). Radiation yield of oxygen consumption, oxidative induction time and gel fraction allowed to estimate the utility of the applied experimental methods to monitor oxidative aging of the polymeric material from the standpoint of cable and wire degradation in nuclear power plants. It was found that the phenolic antioxidant not only inhibits chain oxidation but also changes the mechanisms of radical processes influencing significantly capability of polyethylene towards thermally-induced cross-linking.
Źródło:: Nukleonika; 2012, 57, 4; 485-489
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Influence of radiation sterilization on poly(ester urethanes) designed for medical applications
Autorzy:: Przybytniak, G.
Kornacka, E.
Ryszkowska, J.
Bil, M.
Rafalski, A.
Woźniak, P.
Lewandowska-Szumieł, M.
Powiązania:: https://bibliotekanauki.pl/articles/146105.pdf
Data publikacji:: 2006
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: polyurethane
radiation sterilization
EPR
cross-linking
degradation
Opis:: Preparation of scaffolds for tissue regeneration requires elucidation of chemical and physical processes induced by ionizing radiation during radiation sterilization of polymeric materials used for these purposes. Such treatment induces many unintended and desired reactions that lead either to degradation or cross-linking of macromolecules. It was found that in poly(ester urethane) the ester segments are responsible predominantly for radiation induced phenomena. Some radicals generated following irradiation were identified under cryogenic conditions. Upon exposure to sterilizing dose cross-linking was confirmed on the basis of rheological changes in melted polymers. The results obtained by EPR spectroscopy and DRS revealed a relatively high susceptibility of poly(ester urethanes) on oxidation.
Źródło:: Nukleonika; 2006, 51,suppl.1; 121-128
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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