title: Hydroxyapatite nanoparticles: electrospinning and calcination of hydroxyapatite/polyvinyl butyral nanofibers and growth kinetics.
abstract: Electrospinning of hydroxyapatite (HA)/polyvinyl butyral solution resulted in the formation of fibers with average diameter of 937-1440 nm. These fibers were converted into HA nanoparticles with size <100 nm after undergoing calcination treatment at 600°C. The diameter of the fiber was found to be influenced by applied voltage and spinning distance. The injection flowrate did not affect the diameter significantly. The electrospinning method successfully reduced the commercial HA particle size in the range of 400-1100 nm into <100 nm. The dispersion of the finally calcined HA nanoparticles was improved significantly after anionic sodium dodecyl sulfate surfactant was introduced. The experimental data of HA growth kinetics were subjected to the integral method of analysis, and the rate law of the reaction was found to follow the first order reaction.
authors.affiliation: School of Chemical Engineering, Engineering Campus, University Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia.
authors.forename: Siti Maisurah
authors.initials: SM
authors.lastname: Zakaria
authors.forename: Sharif Hussein
authors.initials: SH
authors.lastname: Sharif Zein
authors.forename: Mohd Roslee
authors.initials: MR
authors.lastname: Othman
authors.forename: John A
authors.initials: JA
authors.lastname: Jansen
mesh_terms: D000465:Algorithms; D001826:Body Fluids / Q000737:chemistry; D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D004563:Electrochemistry; D006358:Hot Temperature; D007202:Indicators and Reagents; D007700:Kinetics; D008027:Light; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D057139:Nanofibers; D053758:Nanoparticles; D010316:Particle Size; D011145:Polyvinyls / Q000737:chemistry*; D012542:Scattering, Radiation; D012967:Sodium Dodecyl Sulfate; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013501:Surface-Active Agents
chemical_list: D007202:Indicators and Reagents; D011145:Polyvinyls; D013501:Surface-Active Agents; D012967:Sodium Dodecyl Sulfate; C027464:polyvinylbutyral; D017886:Durapatite