Biomimetic nanofibrous scaffolds: Preparation and characterization of chitin/silk fibroin blend nanofibers

Ko Eun Park, Sung Youn Jung, Seung Jin Lee, Byung Moo Min, Won Ho Park

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194 Scopus citations


Electrospinning of chitin/silk fibroin (SF) blend solutions in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) was investigated to fabricate a biomimetic nanostructured scaffolds for tissue engineering. The morphology of the electrospun chitin/SF blend nanofibers was investigated with a field emission scanning electron microscope (FE-SEM). The average diameters of chitin/SF blend fibers decreased from 920 to 340 nm, with the increase of chitin content in blend compositions. The miscibility of chitin/SF blend fibers was examined by solution viscosity measurement. The chitin and SF were immiscible in the as-spun nanofibrous structure. The dimensional stability of chitin/SF blend nanofibers, with or without water vapor after-treatment, was conducted by immersing in water. As-spun SF-rich blend nanofibrous matrices were lost their fibrous structure after the water immersion for 24 h, and then changed into membrane-like structure. On the contrary, nanofibrous structures of water vapor-treated SF-rich blends were almost maintained. To assay the cytocompatibility and cell behavior on the chitin/SF blend nanofibrous scaffolds, cell attachment and spreading of normal human epidermal keratinocyte and fibroblasts seeded on the scaffolds were studied. Our results indicate that chitin/SF blend nanofibrous matrix, particularly the one that contained 75% chitin and 25% SF, could be a potential candidate for tissue engineering scaffolds because it has both biomimetic three-dimensional structure and an excellent cell attachment and spreading for NHEK and NHEF.

Original languageEnglish
Pages (from-to)165-173
Number of pages9
JournalInternational Journal of Biological Macromolecules
Issue number3-5
StatePublished - 30 May 2006

Bibliographical note

Funding Information:
This work was supported by a grant from the Korean Ministry of Commerce, Industry, and Energy and by a grant from the Korean Science and Engineering Foundation through the Intellectual Biointerface Engineering Center at Seoul National University.


  • Blend nanofiber
  • Chitin
  • Electrospinning
  • Fibroblast
  • Matrix
  • Silk fibroin


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