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Gamma-ray induced crosslinking of polynorbornene and its copolymer containing a stabilizing group

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Summary

The gamma-ray induced, solid state crosslinking of polynorbornene(PolyNB) and its copolymer was studied. PolyNB degradates when irradiated in air, but it is readily crosslinked in vacuum. Homopolymer and copolymers containing a stabilizing group, 3,5-di-tert-butyl-4-hydroxybenzoyloxy group, were resistant to crosslinking showing induction periods before crosslinking. The irradiated PolyNB showed an ESR signal due to the allyl radical, and the polymer containing the hydroxybenzoyloxy group showed a signal due to the quinolic radical.

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Authors and Affiliations

  1. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, 04510, México, DF, Mexico

    Edmundo Miranda, Mikhail A Tlenkopatchev & Takeshi Ogawa

  2. Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, 04510, México, DF, Mexico

    Emilio Bucio, Gerardo Canizal & Guillermina Burillo

Authors
  1. Emilio Bucio
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  2. Gerardo Canizal
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  3. Guillermina Burillo
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  4. Edmundo Miranda
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  5. Mikhail A Tlenkopatchev
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  6. Takeshi Ogawa
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Bucio, E., Canizal, G., Burillo, G. et al. Gamma-ray induced crosslinking of polynorbornene and its copolymer containing a stabilizing group. Polymer Bulletin 37, 539–544 (1996). https://doi.org/10.1007/BF00556817

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  • DOI: https://doi.org/10.1007/BF00556817

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