摘要:
The invention relates to a cosmetic composition based on hyaluronic acid, which includes nanofibres comprising hyaluronic acid or a pharmaceutically acceptable salt thereof and at least one carrier polymer, preferably polyethylene oxid, polyvinyl alcohol. Further, it discloses the method of production of said composition which is carried out by means of electrostatic spinning of the mixture in water.
摘要:
The subject of the invention is a bioactive nanocomposite layer prepared by the combination of electrospinning and electroblowing of a collagen solution comprising hydroxyapatite nanoparticles and poly(ethylene oxide), where, after the preparation and the crosslinking, the layer consists of 75 to 100 wt. % of collagen type I fibres, 5 - 15 wt. % of hydroxyapatite, and 0 - 1 wt. % of poly(ethylene oxide). The subject of this invention is also a method of production of said layer and a method of depositing antibiotics for a more effective releasing thereof without increasing the cytotoxicity. Said method comprises the impregnation of crosslinked sterilized collagen/hydroxyapatite layers with antibiotics in the form of a solution. The subject of the invention also comprises orthopaedic and dental implants based on metal or metal alloys, electrostatically coated with said composite layer based on collagen nanofibers with integrated hydroxyapatite nanoparticles and an antibiotic or a combination of antibiotics.