title: Hydroxyapatite nanorods/poly(vinyl pyrolidone) composite nanofibers, arrays and three-dimensional fabrics: electrospun preparation and transformation to hydroxyapatite nanostructures.
abstract: Electrospinning has been recognized as an efficient technique for fabricating polymer nanofibrous biomaterials. However, the study of electrospun inorganic biomaterials with well-designed three-dimensional (3-D) structures is still limited and little reported. In this study hydroxyapatite (HAp) nanorods with an average diameter of approximately 7 nm and length of approximately 27 nm were synthesized through a simple precipitation method and used for the fabrication of inorganic/organic [poly(vinyl pyrolidone) (PVP)] composite nanofibers by electrospinning in ethanol solution. 3-D fabrics and aligned nanofiber arrays of the HAp nanorods/PVP composite were obtained as precursors. Thereafter, 3-D single phase HAp fabrics, tubular structures and aligned nanofiber arrays were obtained after thermal treatment of the corresponding composite precursors. Cytotoxicity experiments indicated that the HAp fabric scaffold had good biocompatibility. In vitro experiments showed that mesenchymal stem cells could attach to the HAp fabric scaffold after culture for 24h.
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China.
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.forename: Qi-Li
authors.initials: QL
authors.lastname: Tang
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Zhu
authors.forename: Ke-Wei
authors.initials: KW
authors.lastname: Wang
authors.forename: Mei-Li
authors.initials: ML
authors.lastname: Zhang
authors.forename: Wan-Yin
authors.initials: WY
authors.lastname: Zhai
authors.forename: Jiang
authors.initials: J
authors.lastname: Chang
mesh_terms: D000818:Animals; D002152:Calorimetry, Differential Scanning; D016923:Cell Death / Q000187:drug effects; D002478:Cells, Cultured; D017886:Durapatite / Q000138:chemical synthesis* / Q000737:chemistry*; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D011205:Povidone / Q000494:pharmacology*; D011760:Pyrrolidinones / Q000494:pharmacology*; D011817:Rabbits; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D023822:Tissue Engineering / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D011760:Pyrrolidinones; D017886:Durapatite; D011205:Povidone