The Hardystonite/PA66 Composite for Using as the Intervertebral Fusion Cage

Fariborz Tavangarian, Sorour Sadeghzade, Rahmatollah Emadi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of this study was to design and evaluate nano-hardystonite/polyamide 66 composites with close mechanical properties to the trabecular bone to prevent the stress shielding phenomenon for bone tissue engineering applications. This composite can be used as an intervertebral fusion cage to perform spinal fusion between vertebrae in the lumbar spine. The pure nano-hardystonite powder was fabricated by combustion method at 900 °C following by 5 h ball mill. The nano-hardystonite/Polyamide 66 and nano-hydroxyapatite/Polyamide 66 cage were prepared by injection molding method to compare the mechanical and biological properties. In this end, the X-ray diffraction (XRD) and scanning electron microscopy (SEM) were utilized to characterize the prepared powder and cage samples. Based on the results, the addition of 30% nano-hardystonite improved both mechanical and bioactivity properties. The optimum hardystonite/PA66 samples revealed the compressive strength and elastic modulus of 69.19 ± 0.89 MPa and 2.56 ± 0.5 GPa, respectively, compared to 53.45 ± 1.2 MPa and 3.45 ± 0.3 GPa in hydroxyapatite/PA66 sample, respectively. In addition, observation of the superior apatite formation ability of hardystonite/PA66 compared to hydroxyapatite/PA66 indicated that it can be used as a spinal vertebrae replacement material.

Original languageEnglish (US)
Title of host publicationAdvances in Powder and Ceramic Materials Science, TMS 2020
EditorsBowen Li, Shefford P. Baker, Huazhang Zhai, Sergio Neves Monteiro, Rajiv Soman, Faqin Dong, Jinhong Li, Ruigang Wang
PublisherSpringer
Pages151-158
Number of pages8
ISBN (Print)9783030365516
DOIs
StatePublished - 2020
EventSymposium on Advances in Powder and Ceramic Material Science held at the 149th Annual Meeting and Exhibition, TMS 2020 - San Diego, United States
Duration: Feb 23 2020Feb 27 2020

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceSymposium on Advances in Powder and Ceramic Material Science held at the 149th Annual Meeting and Exhibition, TMS 2020
CountryUnited States
CitySan Diego
Period2/23/202/27/20

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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