Characterization of biodegradable core–clad borosilicate glass fibers with round and rectangular cross-section

Mikko Hongisto, Sonya Ghanavati, Arnaud Lemiere, Gregory Hauss, Shashank Boraiah, Louis Cornet, Angeline Poulon-Quintin, Dominique Pagnoux, Dominique Bernard, Jonathan Massera, Laeticia Petit, Veronique Jubera, Sylvain Danto

Research output: Contribution to journalArticleScientificpeer-review


Here, we report on core–clad bioactive borosilicate fibers, that we have prepared both with round and rectangular cross-section profile. The exposed approach, which relies on the stacking and drawing of glass slabs, demonstrates our ability to develop bioactive-based glass fibers with tailored cross-section profiles. Tens-of-meters-long fibers were successfully drawn, although suffering from elevated losses in the case of the rectangular ones. The response of the fibers in simulated body fluid was studied for both geometries. We found that a round cladding can act as protective layer, tempering effects of the corrosion. We also noticed that rectangular fibers are more prone to degradation, the enhanced corrosion beginning from their sharp corners as they accumulated residual tensile stress during drawing. To the best of our knowledge, this is the first report on the effect of residual tensile stresses from surface tension deformations applied to the corrosion of rectangular fibers. As geometry plays a critical role on the biodegradation behavior of the fiberglass, we believe the enclosed results could lead to the design of fiber devices with tailored cross-section profile in order to tune their rate of degradation on solely based geometrical effects.

Original languageEnglish
Pages (from-to)6527-6540
Issue number11
Publication statusPublished - 2023
Publication typeA1 Journal article-refereed


  • bioactive glass
  • biodegradation
  • borosilicate glass
  • fibers

Publication forum classification

  • Publication forum level 2

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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