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Fiber reinforcement of a biomimetic bone cement

  • S. Panzavolta
  • B. Bracci
  • M. L. Focarete
  • C. Gualandi
  • A. Bigi
Article

Abstract

In this study we investigated the influence of electrospun polymer fibers on the properties of a α-tricalcium phosphate/gelatin biomimetic cement. To this aim, we added different amounts of poly(l-lactic acid) and poly(lactide-co-glycolide) fibers to the cement composition. Fibers enrichment provoked a significant reduction of both initial and final setting times. Moreover electrospun polymer fibers slowed down the conversion of α-tricalcium phosphate into calcium deficient hydroxyapatite. As a result, the final cements were more compact than the control cement, because of the smaller crystal dimensions and reduced crystallinity of the apatitic phase. The compressive strength, σb, and Young’s modulus, E, of the control cement decreased significantly after 40 days soaking in physiological solution, whereas the more compact microstructure enabled fiber reinforced cements to maintain their mechanical properties in the long term.

Keywords

Gelatin PLLA Physiological Solution Electrospun Fiber DCPD 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This research was carried out with the financial support of Regione Emilia Romagna (Programma di Ricerca Regione Università, Area 1b ‘Medicina rigenerativa’).

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • S. Panzavolta
    • 1
  • B. Bracci
    • 1
  • M. L. Focarete
    • 2
  • C. Gualandi
    • 2
  • A. Bigi
    • 1
  1. 1.Department of Chemistry “G. Ciamician”University of BolognaBolognaItaly
  2. 2.Department of Chemistry “G. Ciamician” and National Consortium of Materials Science and Technology (INSTM, Bologna RU)University of BolognaBolognaItaly

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