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Anti-Radical Activity of Fullerenes and Carbon Nanotubes in Reactions of Radical Polymerization and Polymer Thermal/Thermo-Oxidative Degradation

A Review
  • Eldar B. Zeynalov and Joerg F. Friedrich
Published/Copyright: May 26, 2013
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Abstract

The behaviour of fullerenes (mostly the C60 and C70) in a radical polymerization and during thermal/thermo-oxidative degradation of polymers is considered. The analysis of literature material clearly shows that fullerenes preferably act as scavengers of carbon-centered free radicals, and therefore they appear to be inhibitors for the radical polymerization and stabilizers for polymer materials.

No distinct indication of any proved active or specific role for oxygen-centered radicals has been specified.

As carbon nanotubes (CNTs) have electron affinities similar to those of fullerenes, and might therefore also be predicted to behave as radical traps in chain reactions such as polymerization and thermal degradation of polymers as well.

Kurzfassung

Das Verhalten von Fullerenen (hier vor allem C60– und C70–Fulleren) bei einer radikalischen Polymerisation und das der entsprechenden Polymere beim thermoxidativen Abbau werden untersucht. Aus der Literatur ist bekannt, dass Fullerene als C-Radikalfänger wirken. Deshalb wirken sie als Inhibitoren bei der radikalischen Polymerisation und als Stabilisatoren bei der Alterung von Polymeren. O-Radikale scheinen durch die Fullerene hingegen nicht beeinflusst zu werden. Kohlenstoff-Nanotubes haben eine ähnliche Elektronenaffinität wie die Fullerene, weshalb sie ebenfalls als Inhibitoren bzw. Stabilisatoren bei der radikalischen Polymerisation und dem thermoxidativen Abbau wirken.


Eldar Zeynalov, born 1948, studied and achieved his PhD in Chemistry at the Azerbaijan State University & USSR Academy of Sciences. Since 1976 he has been research officer, senior staff scientist, DSc, professor, scientific department leader and head of the laboratory at the Institute of Petrochemical Processes of Azerbaijan National Academy of Sciences in Baku.

Jörg Friedrich, born 1948, studied Chemistry from 1972 to 1976 at the Humboldt University Berlin. From 1976 to 1991 he worked at the German Academy of Sciences in Berlin (GDR). He achieved his PhD in polymer- and plasma chemistry in 1975, and his DSc in 1982. In 1975 he became deputy chief of the department Polymer Composites and achieved in 1991 his habilitation (venia legendi) at the University of Merseburg. From 1992 to 1994 he was head of the plasma chemistry group in ACA Berlin. Since 1995 he is Dir. a. Prof. and head of the divisons Analysis and Structure of Polymers and Polymer Surfaces at the Federal Institute for Materials Research and Testing. Since 2002 he is also lecturer at the Technical University Berlin.


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Published Online: 2013-05-26
Published in Print: 2007-05-01

© 2007, Carl Hanser Verlag, München

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