Browsing Chemical Engineering by Author "Zahran, R. R"

Now showing items 1-4 of 4

    • Analysis of the thermal expansion behavior of oriented polyoxymethylene sheets 

      Zahran, R. R.; Shenouda, S. S.; El-Tawil, Y. A.; El-Kayar, A. ( Wiley Subscription Services, Inc., A Wiley Company , 1996 , Article)
      The applicability of the molecular composite model is extended to include the analysis of the thermal expansion behavior of oriented (anisotropic) polyoxymethylene. The model accounts for changes in the morphological and ...

    • Structure-thermal expansivity relation for isotropic polyoxymethylene sheets 

      Zahran, R. R.; Abolmagd, A. A. ( John Wiley & Sons, Ltd. , 1994 , Article)
      A detailed parametric mapping analysis of the thermal expansion coefficient for isotropic polyoxymethylene is presented. The molecular composite model has been computerized to investigate the variation of the thermal ...

    • Thermal dimensional stability of isotropic polyoxymethylene 

      Zahran, R. R.; Abolmagd, A. A. ( John Wiley & Sons, Ltd. , 1991 , Article)
      A parametric mapping analysis of the effect of various structural and morphological parameters on the thermal dimensional stability of polyoxymethylene is highlighted. The molecular composites model is found to describe ...

    • Ultrasonic and thermal properties of γ-irradiated low-density polyethylene 

      Zahran, R. R.; Kandeil, A. Y.; Higazy, A. A.; Kassem, M. E. ( John Wiley & Sons, Inc. , 1993 , Article)
      The ultrasonic pulse-echo technique and differential thermal analysis were utilized to characterize and to monitor the effect of ?-irradiation on the sonic modulus and the heat effect of low-density polyethylene. The sonic ...