Possibility for Increasing the Apparent BET Surface Area of Polymers by gamma-Rays Induced Post-Crosslinking

0326914 - ÚCHP 2010 SK eng C - Konferenční příspěvek (zahraniční konf.)
Aleksieva, Krasimira - Sassi, A. - Jeřábek, Karel
Possibility for Increasing the Apparent BET Surface Area of Polymers by gamma-Rays Induced Post-Crosslinking.
Proceedings. Bratislava: Slovak University of Technology, 2009 - (Markoš, J.), s. 195. ISBN 978-80-227-3072-3.
[International Conference of Slovak Society of Chemical Engineering /36./. Tatranské Matliare (SK), 25.05.2009-29.05.2009]
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: gamma-rays * surface area * porosity
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství

There was investigated the possibility for increasing the apparent specific surface area of polystyrene sorbents crosslinked to different extent by irradiation with gamma-rays. Since the radiolysis is known for its ability to initiate radical reactions, post-polymerization crosslinking may be performed as a result of the reactions of neighboring chains carrying free radicals. The examinations made both in dry and swollen state of polymers aim to assess the optimal conditions for the radiation-induced crosslinking of polystyrenes. The optimal procedure should embrace both a suitable irradiation dose and a suitable content of divinylbenzene crosslinker for to overcome the protective action of the benzene rings and simultaneously to minimize the negative effect of chain-scission competing the crosslinking.
Trvalý link: http://hdl.handle.net/11104/0173852