کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7870158 | 1509187 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of the chemical composition of monetite on the synthesis and properties of α-tricalcium phosphate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The role of the chemical composition of monetite on the synthesis and properties of α-tricalcium phosphate The role of the chemical composition of monetite on the synthesis and properties of α-tricalcium phosphate](/preview/png/7870158.png)
چکیده انگلیسی
In this study, the effect of the chemical composition of reagents used in the synthesis of α-TCP on the local structure of the final product is reported and findings previously reported pertaining to the phase composition and stability are also corroborated. Chemical impurities in the monetite reagents were identified and could be correlated to the calcium phosphate products formed; magnesium impurities favoured the formation of β-TCP, whereas single phase α-TCP was favoured when magnesium levels were low. Monetite synthesised in-house exhibited a high level of chemical purity; when this source was used to produce an α-TCP sample, the α-polymorph could be obtained by both quenching and by cooling to room temperature in the furnace at rates between 1 and 10 °C/min, thereby simplifying the synthesis process. It was only when impurities were minimised that the 12 phosphorus environments in the α-TCP structure could be resolved by 31P nuclear magnetic resonance; samples containing chemical impurity showed differing degrees of line-broadening. Reagent purity should therefore be considered a priority when synthesising/characterising the α-polymorph of TCP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 34, 1 January 2014, Pages 123-129
Journal: Materials Science and Engineering: C - Volume 34, 1 January 2014, Pages 123-129
نویسندگان
Jo Duncan, James F. MacDonald, John V. Hanna, Yuki Shirosaki, Satoshi Hayakawa, Akiyoshi Osaka, Janet M.S. Skakle, Iain R. Gibson,