High Energy Chemistry

, Volume 39, Issue 3, pp 142–147 | Cite as

Structural aspects of the radiation modification of the dielectric properties of polyolefins

  • A. M. Magerramov
  • M. K. Dashdamirov
Radiation Chemistry


The effects of crystallization conditions and supermolecular structure on the processes of radical formation and changes in the dielectric (tanδ; ε) and strength (Est) properties of LDPE, HDPE, and PP under exposure to γ-radiation were studied. It was found that polyolefin specimens with a high crystallinity exhibited an enhanced electric strength, radiation stability, and a high yield of quasi-stable radicals at 293 K. It was assumed that a possible mechanism of the electric strengthening of PE and PP by their radiation modification (at radiation doses of 30–50 and to 5–6 Mrad, respectively) consists in a reaction of the type R· + e → R, the capture of trapped electrons by quasi-stable radicals.


Radiation Physical Chemistry Crystallization Radiation Dose Dielectric Property 
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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • A. M. Magerramov
    • 1
  • M. K. Dashdamirov
    • 1
  1. 1.Institute of Radiation ProblemsAcademy of Sciences of AzerbaijanBakuAzerbaijan

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