Abstract Samples from modified borate Hench's bioglass of nominal composition (45B2O3-24.5Na2O-24.5CaO–6P2O5 wt. %) were successfully synthesized. Both effects of varying gamma irradiation doses (1–10 M rad) and varying dipping times in Simulated Body Fluid (1–4 weeks) were simultaneously studied through different techniques. FTIR resultant spectra of the considered bio-borate glass show bands in the range 410–1600 cm−1 the appearance of small peaks at 1640, 2850 and 2940 cm−1 after irradiation that confirm the existence of the main vibrational units of both triangular and tetrahedral borate groups and minor phosphate groups. XRD for the exposed samples with different doses reveals minor variations in the diffractograms indicating the stability of the constituting component structural units and increase in the hydroxyapatite (HA) hexagonal phase patterns. FTIR spectra after immersion for prolonged times either before and after gamma irradiation show formation of characteristic two far-IR peaks at about 730 and 550 cm−1 together with the formation or increase in the intensity of the peaks at 3445 and 1650 cm−1 due to OH, BOH or POH groups that approve formation of (HA) through the various corrosion steps including hydrolysis, reaction or dissolution of the modifier components and the ultimate interactions to form the calcium phosphate (HA) phase. SEM images confirm the appearance of rounded or nodular-shaped microcrystals especially after extended immersion times. The fraction of four coordinated borons (N4) N4 was observed to increase with immersion time due to the continuous corrosion process including hydration, solubility, besides the fact that the 3-coordinated borons are assumed to be more soluble than compact four-coordinated borons.

中文翻译：

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伽马辐照改性硼酸盐生物玻璃的骨结合增强和协同姿态

摘要 成功合成了标称成分 (45B2O3-24.5Na2O-24.5CaO-6P2O5 wt. %) 的改性硼酸盐 Hench 生物玻璃样品。通过不同的技术同时研究了不同的伽马辐射剂量（1-10 M rad）和不同的模拟体液浸泡时间（1-4 周）的影响。所考虑的生物硼酸盐玻璃的 FTIR 结果光谱显示在 410-1600 cm-1 范围内的波段，辐照后在 1640、2850 和 2940 cm-1 处出现小峰，这证实了三角形和四面体硼酸盐基团和次要磷酸盐基团。具有不同剂量的暴露样品的 XRD 显示衍射图中的微小变化，表明构成组分结构单元的稳定性和羟基磷灰石 (HA) 六方相图案的增加。在伽马辐射前后长时间浸泡后的 FTIR 光谱显示，在约 730 和 550 cm-1 处形成了两个特征性远红外峰，同时在 3445 和 1650 cm-1 处形成或增加了峰强度，这是由于OH、BOH 或 POH 基团通过各种腐蚀步骤包括改性剂组分的水解、反应或溶解以及最终相互作用形成磷酸钙 (HA) 相，从而形成 (HA)。SEM 图像证实了圆形或结节状微晶的出现，尤其是在延长浸泡时间后。