title: Self-setting kinetics of new type calcium phosphate bioactive bone cement: a thermokinetics study.
abstract: Thermokinetics method was used to study the self-setting kinetics of a new kind of calcium phosphate cement (CPC) in the present study. A calcium-deficient hydroxyapatite CPC was developed by using alpha-TCP and other calcium phosphate bioceramics. The mixing liquids used were deionized water and 0.25 M NaH2PO4/Na2HPO4, respectively. The calorimetric curves, heat evolution curves and total heat evolution in the setting and hardening process of CPC were determined. It has been found that mixing liquids, reaction temperature had influences on the calorimetric curves and heat evolution, and mixing liquids exhibited the greatest influence on the kinetics of CPC during the self-setting and hardening process. Based on the calorimetric curves obtained, the kinetic model equation was simulated, and the reaction control step was determined.
authors.affiliation: Department of Inorganic Materials, Sichuan University, Chengdu 610065, Sichuan, China.
authors.forename: X
authors.initials: X
authors.lastname: Zhou
authors.forename: C X
authors.initials: CX
authors.lastname: Wang
authors.forename: C Q
authors.initials: CQ
authors.lastname: Zheng
authors.forename: X C
authors.initials: XC
authors.lastname: Zeng
mesh_terms: D001843:Bone Cements / Q000737:chemistry* / Q000528:radiation effects; D002130:Calcium Phosphates / Q000737:chemistry* / Q000528:radiation effects; D002151:Calorimetry / Q000379:methods*; D017886:Durapatite / Q000737:chemistry / Q000528:radiation effects; D006358:Hot Temperature; D007700:Kinetics; D008422:Materials Testing; D008968:Molecular Conformation; D012996:Solutions / Q000737:chemistry; D013696:Temperature; D013816:Thermodynamics; D014961:X-Ray Diffraction
chemical_list: D001843:Bone Cements; D002130:Calcium Phosphates; D012996:Solutions; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; D017886:Durapatite; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous