Preparation of bioactive spherical particles in the CaO–SiO2 system through sol–gel processing under coexistence of poly(ethylene glycol)

A Novel Synthesis Method of Porous Calcium Silicate Hydrate Based on the Calcium Oxide/Polyethylene Glycol Composites

“…The microstructures are evaluated by Fourier transformed infrared spectroscopy (FT-IR, IR Prestige-21FT-infrared spectrometer, Shimadzu, Japan). when the pH value is over 13.0 [26][27][28]. This result can be verified according to the fraction formula of H 2 SiO 3 , HSiO 3 − and SiO 3 2− under the given pH value as follows:…”

Mechanical and microstructure of reinforced hydroxyapatite/calcium silicate nano-composites materials

“…The broad peak at 31-32°showed that the formation of calcium silicate began at 600°C and at 1000°C calcium silicate (CaSiO 3 ) is without any detectable amount of impurities [31]. [20]. Also, FT-IR spectrum of the CS sample treated at 1000°C show the presence of stretching and bending vibrations of Si-O bands in SiO 4 tetrahedra which appeared at 800-1000 and 400-600 cm À1 , respectively [31], this result has been also observed by other researchers and attributed to the presence of modifier oxides in the silica network [32].…”

“…The formation of bone-like apatite or Ca/P layer was regarded as an essential factor for biomaterials with bioactivity [19]. Kima et al [20] reported that bioactive ceramics bonded directly to living bone, i.e., show osteoconduction, through a bone-like apatite layer formed on their surfaces after implantation in bony defects. Glasses in the CaSiO 3 binary system were important in the formation of the apatite layer in body environment.…”

Synthesis of Bioactive HEMA—MPS—CaCl2 Hybrid Gels: Effects of Catalysts in the Sol—Gel Processing on Mechanical Properties and in vitro Hydroxyapatite Formation in a Simulated Body Fluid

“…All specimens were soaked in SBF for periods of 1 or 7 days. According to previous studies, apatite formation can be observed from the formation of particles on the specimens [6,12,18,19]. Figure 2 shows SEM photographs of the hybrids before and after soaking in SBF for 1 and 7 days.…”