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Information × Registration Number 0214U008471, 0114U007086 , R & D reports Title Preparation of new bioactive composites based on biogenic hydroxyapatite and calcium pyrophosphate for orthopedics and traumatology popup.stage_title Head Sych Olena Evgenivna, Кандидат технічних наук Registration Date 24-12-2014 Organization Frantzevich Insitute for Materials Science Problems of the Ukranian National Academy of Sciences popup.description2 The possibility of preparation of porous calcium phosphate ceramics based on monetite and biogenic hydroxyapatite with starting materials ratio 25:75, 50:50 and 75:25 wt. % was shown. It was established that phase transitions and solid-phase reaction take place and polyphosphate ceramics consists of hydroxyapatite, (Са5(РО4)3(ОН)), pyrophosphate (Са2Р2О7) and tricalcium phosphate (Са3(РО4)2) that form during sintering with predominance of Са2Р2О7 and Са5(РО4)3(ОН) phases depending on the starting composition. The increase of biogenic hydroxyapatite content from 25 to 75 wt. % leads to decrease of grain size and an increase of pore size. The porosity of ceramics is equal to 40-42% with the predominance of open porosity for all prepared compositions. The strength of prepared ceramics is 32-55 MPa and increases with increasing of biogenic hydroxyapatite content in starting composition.5481 Product Description popup.authors Макаренко Олена Сергіївна Отиченко Оксана Миколаївна Пінчук Наталія Дмитрівна Сич Олена Євгенівна Товстоног Ганна Богданівна popup.nrat_date 2020-04-02 Close