Influence of P2O5 on thermal behavior and bioactivity of sol-gel glasses

Chuan Hui Wang; He Jun Li; Feng Ping Huang; Quan Zu Yang

Influence of P₂O₅ on thermal behavior and bioactivity of sol-gel glasses

Chuan Hui Wang, He Jun Li, Feng Ping Huang, Quan Zu Yang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Two bioactive glasses in the system CaO-P₂O₅-SiO₂ were prepared by sol-gel process, from tetraethylorthosilicate (TEOS), triethylphosphate (TEP) and hydrated calcium nitrate (one with P₂O₅ and the other P₂O₅ free). Thermal behavior and reaction mechanism of xerogels were analyzed by TG-DTA methods. The in vitro bioactivity of both glasses was assessed by soaking them in simulated body fluid. The results reveal that the presence of P₂O₅ in the glass composition gives rise to the change of thermal behavior: the organic groups of triethyl phosphate are decomposed in the temperature range 300-420°C and the residual OH groups are removed at 570°C or so. The crystal of hydroxyl carbonate apatite formed on the surface of the glass containing P₂O₅ is larger and, relatively, the bioactivity is improved.

Original language	English
Pages (from-to)	837-841
Number of pages	5
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	20
Issue number	4
State	Published - Jul 2005

Keywords

Bioactivity
DTA
PO
Sol-gel glasses

Cite this

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title = "Influence of P2O5 on thermal behavior and bioactivity of sol-gel glasses",

abstract = "Two bioactive glasses in the system CaO-P2O5-SiO2 were prepared by sol-gel process, from tetraethylorthosilicate (TEOS), triethylphosphate (TEP) and hydrated calcium nitrate (one with P2O5 and the other P2O5 free). Thermal behavior and reaction mechanism of xerogels were analyzed by TG-DTA methods. The in vitro bioactivity of both glasses was assessed by soaking them in simulated body fluid. The results reveal that the presence of P2O5 in the glass composition gives rise to the change of thermal behavior: the organic groups of triethyl phosphate are decomposed in the temperature range 300-420°C and the residual OH groups are removed at 570°C or so. The crystal of hydroxyl carbonate apatite formed on the surface of the glass containing P2O5 is larger and, relatively, the bioactivity is improved.",

keywords = "Bioactivity, DTA, PO, Sol-gel glasses",

author = "Wang, {Chuan Hui} and Li, {He Jun} and Huang, {Feng Ping} and Yang, {Quan Zu}",

year = "2005",

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journal = "Wuji Cailiao Xuebao/Journal of Inorganic Materials",

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TY - JOUR

T1 - Influence of P2O5 on thermal behavior and bioactivity of sol-gel glasses

AU - Wang, Chuan Hui

AU - Li, He Jun

AU - Huang, Feng Ping

AU - Yang, Quan Zu

PY - 2005/7

Y1 - 2005/7

N2 - Two bioactive glasses in the system CaO-P2O5-SiO2 were prepared by sol-gel process, from tetraethylorthosilicate (TEOS), triethylphosphate (TEP) and hydrated calcium nitrate (one with P2O5 and the other P2O5 free). Thermal behavior and reaction mechanism of xerogels were analyzed by TG-DTA methods. The in vitro bioactivity of both glasses was assessed by soaking them in simulated body fluid. The results reveal that the presence of P2O5 in the glass composition gives rise to the change of thermal behavior: the organic groups of triethyl phosphate are decomposed in the temperature range 300-420°C and the residual OH groups are removed at 570°C or so. The crystal of hydroxyl carbonate apatite formed on the surface of the glass containing P2O5 is larger and, relatively, the bioactivity is improved.

AB - Two bioactive glasses in the system CaO-P2O5-SiO2 were prepared by sol-gel process, from tetraethylorthosilicate (TEOS), triethylphosphate (TEP) and hydrated calcium nitrate (one with P2O5 and the other P2O5 free). Thermal behavior and reaction mechanism of xerogels were analyzed by TG-DTA methods. The in vitro bioactivity of both glasses was assessed by soaking them in simulated body fluid. The results reveal that the presence of P2O5 in the glass composition gives rise to the change of thermal behavior: the organic groups of triethyl phosphate are decomposed in the temperature range 300-420°C and the residual OH groups are removed at 570°C or so. The crystal of hydroxyl carbonate apatite formed on the surface of the glass containing P2O5 is larger and, relatively, the bioactivity is improved.

KW - Bioactivity

KW - DTA

KW - PO

KW - Sol-gel glasses

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M3 - 文章

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JO - Wuji Cailiao Xuebao/Journal of Inorganic Materials

JF - Wuji Cailiao Xuebao/Journal of Inorganic Materials

IS - 4

ER -

Influence of P₂O₅ on thermal behavior and bioactivity of sol-gel glasses

Abstract

Keywords

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