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Effects of gamma irradiation on polypropylene, polypropylene + high density polyethylene and polypropylene + high density polyethylene + wood flour

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Material Research Innovations

Abstract 

The effect of the gamma-irradiation on the mechanical properties of the composites, Polypropylene (PP), PP+high density Polyethylene (HDPE), PP+ HDPE+wood flour, where HDPE is virgin and recycled, was studied. This paper discusses the behavior of the composites after exposure to various doses of gamma irradiation (1–7 MRads) in the presence of oxygen. The dependence of mechanical properties on the integral dose for a constant dose rate of 0.48 MRads/h confirms the influence of the irradiation. Strong effects on the elongation at break and break strength is noticed. The mathematical analysis suggests for the PP+r-HDPE a bimolecular process of the elongation at break. On the order hand, for the PP+HDPE a complex process is represented for a three exponential equation.

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Authors and Affiliations

  1. Universidad Central de Venezuela, Facultad de Ingeniería, Escuela de Ingeniería Química, Los Chaguaramos, PO Box: 48146. Caracas 1041 A, Venezuela e-mail: albanoc@camelot.rect.ucv.ve, , , , , , VE

    J. Reyes, C. Albano, E. Davidson & R. Poleo

  2. Universidad Simón Bolívar, Departamento de Mecánica, Caracas, Venezuela, , , , , , VE

    J. González & M. Ichazo

  3. Research Institute for Electrotechnics, Bucharest, Romania, , , , , , RO

    M. Chipara

Authors
  1. J. Reyes
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  2. C. Albano
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  3. E. Davidson
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  4. R. Poleo
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  5. J. González
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  6. M. Ichazo
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  7. M. Chipara
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Additional information

Received: 9 October 2000 / Reviewed and accepted: 10 October 2000

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Reyes, J., Albano, C., Davidson, E. et al. Effects of gamma irradiation on polypropylene, polypropylene + high density polyethylene and polypropylene + high density polyethylene + wood flour. Mat Res Innovat 4, 294–300 (2001). https://doi.org/10.1007/s100190000104

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  • DOI: https://doi.org/10.1007/s100190000104

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