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Sterilization effect on structure, thermal and time-dependent properties of polyamides

  • G. Kubyshkina
  • B. Zupančič
  • M. Štukelj
  • D. Grošelj
  • L. Marion
  • I. Emri
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

This article studies the effect of different sterilization techniques on structure, thermal and time-dependent mechanical properties of polyamide 6 materials. We used two different types of polyamide 6 material: conventional polyamide 6 with monomodal molecular mass distribution and modified with bimodal one. Samples were prepared and properly shaped in order to observe the mentioned features before and after sterilization with three different techniques, namely sterilization with autoclave, ethylene oxide, and hydrogen peroxide plasma. Optical microscopy, differential scanning calorimetry and torsional creep testing were used for the properties investigation. As a main criterion to evaluate the effect of sterilization durability of materials was used. There was observed significant difference between monomodal and bimodal PA6 materials regarding their morphology and consequently thermal and mechanical properties: bimodal material exhibits more complex structure than chemically identical monomodal one. The results of analysis did not show considerable influence on both materials structure and thermal properties. However, there was observed strong effect on creep behavior. The most significant effect is detected for monomodal material sterilized by ethylene oxide, while creep compliance of the bimodal material did not change much due to any of applied sterilization techniques. Thus, modification the complexity of the material inherent structure improves sensitivity to sterilization.

Keywords

sterilization ethylene oxide hydrogen peroxide plasma autoclave polymer polyamide nylon bimodal molecular mass distribution time-dependent mechanical properties creep compliance 

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References

  1. 1.
    Koudi M.S., Patil S.B. Dental materials: Prep Manual for Undergraduates, 1st Edition, 2007Google Scholar
  2. 2.
    Emri I., Bernstorff B.S. von. The Effect of Molecular Mass Distribution on Time-Dependent Behavior of Polyamides. Journal of Applied Mechanics 2006; 73: 1–6Google Scholar
  3. 3.
    Park J.B., Lakes R.S. Biomaterials: An Introduction, 3rd Edition. Springer, 2007Google Scholar
  4. 4.
    Braybrook J.H. Biocompatibility: assessment of medical devices and materials. 1997Google Scholar
  5. 5.
    Massey L.K. The Effect of Sterilization Methods on Plastics and Elastomers, 2nd Edition, 2006Google Scholar
  6. 6.
    Tschoegel N.W. The phenomenological theory of linear viscoelastic behavior: An introduction. Springer-Verlag, Berlin, Heidelberg, 1989CrossRefGoogle Scholar
  7. 7.
    Aklonis J.J., Macknight W.J., M.Shen. Introduction to polymer viscoelasticity, 2nd Edition, 1983Google Scholar
  8. 8.
    Metlikovič P, Emri I. ’Analiza procesa lezenja viskoelastičnih materialov pod vplivom strižne obremenitve’. Kovine, zlitine, tehnologije 1994; 28(1–2): 407–409Google Scholar
  9. 9.
    Metlikovič P. Analiza procesa lezenja viskoelastičnih materialov pod vplivom strižne obremenitve, magistrska naloga. Fakulteta za strojništvo, Ljubljana, 1989Google Scholar
  10. 10.
    Metlikovič P, Emri I. ’Naprava za merjenje lezenja torzijsko obremenjenih polimernih preizkušancev. Stroj vestn 1989; 35: 56–58Google Scholar
  11. 11.
    Metlikovič P, Emri I. ’Naprava za merjenje lezenja torzijsko obremenjenih polimernih preizkušancev’. Stroj vestn 1990; 36: 101–104Google Scholar
  12. 12.
    Cvelbar R, Emri I. ’Analiza prehodnega pojava pri merjenju lezenja viskoelastičnih materialov’. Kovine, zlitine, tehnologije 1994; 28(1–2): 359–362Google Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2011

Authors and Affiliations

  • G. Kubyshkina
    • 1
  • B. Zupančič
    • 2
  • M. Štukelj
    • 3
  • D. Grošelj
    • 4
  • L. Marion
    • 4
  • I. Emri
    • 2
  1. 1.Elektromaterial Lendava d.d.LjubljanaSlovenia
  2. 2.Center for Experimental Mechanics, Faculty of Mechanical EngineeringUniversity of LjubljanaLjubljanaSlovenia
  3. 3.Veterinary FacultyUniversity of LjubljanaLjubljanaSlovenia
  4. 4.Faculty of MedicineUniversity of LjubljanaLjubljanaSlovenia

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