Mechanics of electrospun collagen and hydroxyapatite/collagen nanofibers

Jing Ji, Benny Bar-On, H. Daniel Wagner

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Single collagen fibers and nanohydroxyapatite/collagen nanocomposite fibers with 6.4-18.5. wt% hydroxyapatite (HA) content were prepared by electrospinning. Their mechanical properties were systematically investigated at ambient conditions by means of nanotensile tests. A narrow range of fiber diameters, 250-350. nm, was selected for these tests as size effects are observed for the mechanical properties of all the fibers types, namely a decrease as the fiber diameter increases. The pure collagen fibers are found to exhibit tensile properties comparable to natural collagen fibril. Young's modulus of the HA-filled nanocomposite fibers is found to be only slightly higher than that of the pure collagen fibers, but significant improvements in strength, strain and toughness, are obtained. Optimal mechanical properties arise in the 6.4-11.6. wt% HA range.

Original languageEnglish
Pages (from-to)185-193
Number of pages9
JournalJournal of the Mechanical Behavior of Biomedical Materials
StatePublished - 2012
Externally publishedYes


  • Collagen
  • Electrospun fibers
  • Hydroxyapatite
  • Mechanical properties
  • Nanocomposite

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Mechanics of Materials


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