SiO2 entrapment of animal cells. Part I: Mechanical features of sol-gel SiO2 coatings

V. M. Sglavo, G. Carturan, R. Dal Monte, M. Muraca

Research output: Contribution to journalArticle

Abstract

Natural silk fibers show valuable changes in elastic modulus, E, and failure stress, σf, upon treatment with an air flux of gaseous Si-alkoxides bearing a thin sol-gel layer of SiO2 on the fiber surface. These mechanical features are studied here as a function of the composition of gaseous flux and reaction time. Owing to the different behavior between original and treated fibers submitted to loading-unloading cycles, the maximum increase in E (about 50%) and σf (about 30%) are discussed in terms of intermolecular surface interactions of -O-Si-O- bridging groups and protein macromolecules. As an extension of this system, composed of a thin sol-gel SiO2 layer (0.05-0.1 μm) on protein surfaces, the mechanical improvement of collagen+cell deposits upon deposition of sol-gel SiO2 is suggested.

Original languageEnglish
Pages (from-to)3587-3590
Number of pages4
JournalJournal of Materials Science
Volume34
Issue number15
DOIs
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Materials Science(all)

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