Biodegradable ceramic fibres from silica sols useful in delivery devices for biologically active agents

摘要

A controlled biodegradable silica fibre is spun from the silica sol wherein the biodegradable rate of the fibre is adjusted by controlling the starting point of the spinning process. The starting point is determined by the viscosity of the silica sol wherefrom the fibre is spun. The solubility of the fibre in a simulated body fluid is 0.02-20 wt%/h. The fibre is used in a delivery device for delivering medicines.