title: In-vitro calcium phosphate growth over functionalized cotton fibers.
abstract: Biomimetic growth of calcium phosphate compound on cotton sheets treated with tetraethoxy silane and soaked in simulated body fluid solution was studied using scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), micro-Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD). Micro-FTIR and EDAX results show that silicon was coupled to the cotton fiber when cotton was treated with tetra-ethoxy silane (TEOS) at 125 degrees C for 1 h. Calcium phosphate nucleation started to occur on the surface of TEOS-treated cotton fibers upon immersion in 1.5xSBF (simulated body fluid solution) within 3 days and after 20 days, all the fiber surfaces were found covered with a thick and porous coating of calcium phosphate. The Ca and P determined by inductively coupled plasma spectroscopy (ICP) analysis revealed that the Ca/P ratio as well as the amount of calcium phosphate coating depends on the soaking time in SBF solution.
authors.affiliation: Bioceramic Laboratory, National Industrial Research Institute of Nagoya, Hirate-cho, Kita-ku, Nagoya 462, Japan.
authors.forename: H K
authors.initials: HK
authors.lastname: Varma
authors.forename: Y
authors.initials: Y
authors.lastname: Yokogawa
authors.forename: F F
authors.initials: FF
authors.lastname: Espinosa
authors.forename: Y
authors.initials: Y
authors.lastname: Kawamoto
authors.forename: K
authors.initials: K
authors.lastname: Nishizawa
authors.forename: F
authors.initials: F
authors.lastname: Nagata
authors.forename: T
authors.initials: T
authors.lastname: Kameyama