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首页> 外文期刊>Acta biomaterialia >Substitutions of cerium, gallium and zinc in ordered mesoporous bioactive glasses.
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Substitutions of cerium, gallium and zinc in ordered mesoporous bioactive glasses.

机译：有序介孔生物活性玻璃中的铈，镓和锌的替代物。

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Ordered mesoporous glasses based on the 80% SiO(2)-15% CaO-5% P(2)O(5) system including up to 3.5% Ce(2)O(3), 3.5% Ga(2)O(3) or 7.0% ZnO (in mol.%) were synthesized by the evaporation-induced self-assembly process using Pluronic(R) 123 as a surfactant. An ordered hexagonal mesophase was observed in both the unsubstituted glass (denoted in this paper as B: blank) and glasses containing <0.4% of substituent by X-ray diffraction, transmission electron microscopy and electron diffraction. The increase in the amount of substituent led to a decrease in the mesopore order. B glass exhibited good textural properties: S(BET)=515m(2)g(-1), D(P)=4.7nm and V(P)=0.58cm(3)g(-1). With the inclusion of cerium, gallium and zinc oxides the textural properties decreased, but remained in amounts useful for clinical applications. Zinc-containing samples showed the highest decrement in the textural properties. Substituted glasses exhibited a quick in vitro bioactive response except when the ZnO content was over 0.4%. Taking into account the ordered mesoporosity, the quick in vitro bioactive response and the added values of the substituents, this new family of glasses are promising candidates for applications in bone tissue engineering.
机译：基于80％SiO（2）-15％CaO-5％P（2）O（5）系统订购的介孔玻璃，包括高达3.5％Ce（2）O（3），3.5％Ga（2）O（ 3）或7.0％的ZnO（以摩尔％计）使用Pluronic 123作为表面活性剂通过蒸发诱导的自组装方法合成。通过X射线衍射，透射电子显微镜和电子衍射，在未取代的玻璃（在本文中表示为B：空白）和含有＜0.4％取代基的玻璃中均观察到有序的六方中间相。取代基数量的增加导致中孔顺序的降低。 B玻璃具有良好的纹理特性：S（BET）= 515m（2）g（-1），D（P）= 4.7nm和V（P）= 0.58cm（3）g（-1）。随着铈，镓和锌氧化物的加入，质地特性降低，但仍以可用于临床的量存在。含锌样品的织构性能下降幅度最大。替代玻璃显示出快速的体外生物活性反应，除非ZnO含量超过0.4％。考虑到有序的介孔性，快速的体外生物活性反应和取代基的附加值，这种新的眼镜家族有望在骨组织工程中应用。

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