Synthesis of TTCP by using inverse micelle method
Apstrakt
Tetracalcium phosphate (TTCP, Ca-4(PO4)(2)O) is one of the major powder components of self-setting orthopedic and dental cements. Traditionally, TTCP powders are produced by a solid-state reaction of Ca- and P-containing precursors between 1350 and 1500 degrees C. Such procedures require expensive high-temperature furnaces and subsequent grinding of sintered particles. Grinding not only leads to the contamination but also alters the structure of TTCP, thereby reducing its bioactivity. The present paper offers an innovative approach to the inverse micelle method of TTCP synthesis, with a subsequent thermal treatment to obtain purer TTCP phase. The obtained powder was a mixture of TTCP and octacalcium phosphate (OCP) phases for thermally untreated sample, while for the sample thermally treated at 800 degrees C it was a mixture of TTCP and beta-TCP phases. The TTCP phase was prevailing phase in both cases. A typical shape of TTCP nanoparticles was needle-like. Somewhere, needles are joine...d together forming platelet-like structures. Investigations of the obtained phases were made by XRD and TEM. The mechanism of chemical synthesis and structural arrangements of the obtained phases were particularly investigated. The specific surface area and mechanical properties (compressive and flexural strength) of cements based on needle like TTCP (n-TTCP) and irregular shape TTCP (i-TTCP), as the most frequent form of TTCP appeared in literature, were compared. It was shown, by corresponding calculations, that the specific surface area of n-TTCP (determined from TEM micrographs) was much higher than in the case of i-TTCP (determined from SEM micrographs). Beside, compressive and flexural strength of n-TTCP based cement were significantly improved, because n-TTCP whiskers considerably reinforced structure of hardened cement paste. (C) 2013 Elsevier B.V. All rights reserved.
Ključne reči:
Biomaterials / Chemical synthesis / Mechanical properties / TEMIzvor:
Materials Chemistry and Physics, 2014, 143, 3, 1481-1488Finansiranje / projekti:
- Hemijsko i strukturno dizajniranje nanomaterijala za primenu u medicini i inženjerstvu tkiva (RS-MESTD-Basic Research (BR or ON)-172026)
DOI: 10.1016/j.matchemphys.2013.12.004
ISSN: 0254-0584; 1879-3312
WoS: 000331347500081
Scopus: 2-s2.0-84891631334
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Jokanović, Vukoman R. AU - Čolović, Božana M. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5880 AB - Tetracalcium phosphate (TTCP, Ca-4(PO4)(2)O) is one of the major powder components of self-setting orthopedic and dental cements. Traditionally, TTCP powders are produced by a solid-state reaction of Ca- and P-containing precursors between 1350 and 1500 degrees C. Such procedures require expensive high-temperature furnaces and subsequent grinding of sintered particles. Grinding not only leads to the contamination but also alters the structure of TTCP, thereby reducing its bioactivity. The present paper offers an innovative approach to the inverse micelle method of TTCP synthesis, with a subsequent thermal treatment to obtain purer TTCP phase. The obtained powder was a mixture of TTCP and octacalcium phosphate (OCP) phases for thermally untreated sample, while for the sample thermally treated at 800 degrees C it was a mixture of TTCP and beta-TCP phases. The TTCP phase was prevailing phase in both cases. A typical shape of TTCP nanoparticles was needle-like. Somewhere, needles are joined together forming platelet-like structures. Investigations of the obtained phases were made by XRD and TEM. The mechanism of chemical synthesis and structural arrangements of the obtained phases were particularly investigated. The specific surface area and mechanical properties (compressive and flexural strength) of cements based on needle like TTCP (n-TTCP) and irregular shape TTCP (i-TTCP), as the most frequent form of TTCP appeared in literature, were compared. It was shown, by corresponding calculations, that the specific surface area of n-TTCP (determined from TEM micrographs) was much higher than in the case of i-TTCP (determined from SEM micrographs). Beside, compressive and flexural strength of n-TTCP based cement were significantly improved, because n-TTCP whiskers considerably reinforced structure of hardened cement paste. (C) 2013 Elsevier B.V. All rights reserved. T2 - Materials Chemistry and Physics T1 - Synthesis of TTCP by using inverse micelle method VL - 143 IS - 3 SP - 1481 EP - 1488 DO - 10.1016/j.matchemphys.2013.12.004 ER -
@article{ author = "Jokanović, Vukoman R. and Čolović, Božana M.", year = "2014", abstract = "Tetracalcium phosphate (TTCP, Ca-4(PO4)(2)O) is one of the major powder components of self-setting orthopedic and dental cements. Traditionally, TTCP powders are produced by a solid-state reaction of Ca- and P-containing precursors between 1350 and 1500 degrees C. Such procedures require expensive high-temperature furnaces and subsequent grinding of sintered particles. Grinding not only leads to the contamination but also alters the structure of TTCP, thereby reducing its bioactivity. The present paper offers an innovative approach to the inverse micelle method of TTCP synthesis, with a subsequent thermal treatment to obtain purer TTCP phase. The obtained powder was a mixture of TTCP and octacalcium phosphate (OCP) phases for thermally untreated sample, while for the sample thermally treated at 800 degrees C it was a mixture of TTCP and beta-TCP phases. The TTCP phase was prevailing phase in both cases. A typical shape of TTCP nanoparticles was needle-like. Somewhere, needles are joined together forming platelet-like structures. Investigations of the obtained phases were made by XRD and TEM. The mechanism of chemical synthesis and structural arrangements of the obtained phases were particularly investigated. The specific surface area and mechanical properties (compressive and flexural strength) of cements based on needle like TTCP (n-TTCP) and irregular shape TTCP (i-TTCP), as the most frequent form of TTCP appeared in literature, were compared. It was shown, by corresponding calculations, that the specific surface area of n-TTCP (determined from TEM micrographs) was much higher than in the case of i-TTCP (determined from SEM micrographs). Beside, compressive and flexural strength of n-TTCP based cement were significantly improved, because n-TTCP whiskers considerably reinforced structure of hardened cement paste. (C) 2013 Elsevier B.V. All rights reserved.", journal = "Materials Chemistry and Physics", title = "Synthesis of TTCP by using inverse micelle method", volume = "143", number = "3", pages = "1481-1488", doi = "10.1016/j.matchemphys.2013.12.004" }
Jokanović, V. R.,& Čolović, B. M.. (2014). Synthesis of TTCP by using inverse micelle method. in Materials Chemistry and Physics, 143(3), 1481-1488. https://doi.org/10.1016/j.matchemphys.2013.12.004
Jokanović VR, Čolović BM. Synthesis of TTCP by using inverse micelle method. in Materials Chemistry and Physics. 2014;143(3):1481-1488. doi:10.1016/j.matchemphys.2013.12.004 .
Jokanović, Vukoman R., Čolović, Božana M., "Synthesis of TTCP by using inverse micelle method" in Materials Chemistry and Physics, 143, no. 3 (2014):1481-1488, https://doi.org/10.1016/j.matchemphys.2013.12.004 . .