Cerâmica ()

On mechanical properties and bioactivity of PVDF-BCP composites

  • L. M. Silva,
  • J. M. Rosso,
  • T. G. M. Bonadio,
  • D. M. Silva,
  • G. S. Dias,
  • W. R. Weinand,
  • T. T. Tominaga,
  • R. Y. Miyahara,
  • L. F. Cótica,
  • I. A. Santos,
  • V. F. Freitas

DOI
https://doi.org/10.1590/0366-69132018643712325
Journal volume & issue
Vol. 64, no. 371
pp. 359 – 366

Abstract

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Abstract A ceramic/polymer biocomposite with high potential for multifunctional practical applications in bone tissue engineering was synthesized by using a well-known piezoelectric polymer, polyvinylidene fluoride (PVDF), and a high bioactive biphasic calcium phosphate (BCP) ceramic obtained from recycled fish bones. High-bioactivity was observed for the PVDF-BCP composite when it was subjected to conditions that simulate the animal body once a very thick apatite layer (9 μm) was grown on its surface in an immersion experiment (7 days) in simulated body fluid. The structural characteristics of the PVDF-BCP composite showed similarities with highly bioactive young animal bones, overlapped with PVDF polymorphic phases. Mechanical tests revealed properties very similar to those of the human bone tissue with a resistance strength reaching 80 MPa. Together, all these factors indicated a very promising material for application in osseous implants/replacement with postoperative recovery controlled/accelerated by external stimuli.

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