کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1526716 | 1511849 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biomineralizing synthesis of mesoporous hydroxyapatite-calcium pyrophosphate polycrystal using ovalbumin as biosurfactant
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Mesoporous polycrystals of hydroxyapatite-calcium pyrophosphate (HA-CPP) are synthesized via a biomineralizing route using ovalbumin as natural biosurfactant. The mesoporous structure of HA-CPP is characterized by means of X-ray diffraction (XRD), N2 adsorption-desorption isotherms (NADI), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), atom force microscopy (AFM), polarization microscopy (PLM) and stereomicroscopy. The results show that the crystalline grains with an average diameter of 13.2Â nm are uniformly distributed along the protein molecule chains, and this results in microsphere-like particles with diameters of 200-300Â nm. The highly ordered pores involved in microspheres are found to be approximately 6.6Â nm by small-angle XRD. The formation of lyotropic calcium liquid crystal (CLC) plays a key role in the formation and stabilization of the mesoporous structure. A schematic illustration is used to reveal the mechanism of protein-medicated HA-CPP biomineralization, which employs the protein tertiary structure to explain the formation of the porous particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 111, Issues 2â3, 15 October 2008, Pages 265-270
Journal: Materials Chemistry and Physics - Volume 111, Issues 2â3, 15 October 2008, Pages 265-270
نویسندگان
Hongshi Zhao, Wen He, Yingjun Wang, Yuanzheng Yue, Xingguo Gao, Zhengmao Li, Shunpu Yan, Weijia Zhou, Xudong Zhang,