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Apatite formation on a hydrogel containing sulfinic acid group under physiological conditions

机译:在生理条件下含有亚磺酸组的水凝胶上的磷灰石形成

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Abstract Natural bone consists of apatite and collagen fiber. Bioactive materials capable to bonding to bone tissue are clinically used as bone‐repairing materials. Apatite‐organic polymer composites exhibit bone‐bonding abilities and mechanical properties similar to those of natural bone, and these materials can be prepared using biomimetic processes in simulated body fluid (SBF). Specific functional groups such as sulfonic and carboxylic acid groups are known to induce the heterogeneous nucleation of apatite in SBF. However, it remains unclear whether structurally related sulfinic acid groups can contribute to apatite formation in the same way, despite sodium sulfonate being used in biomedical applications as a radical polymerization promoter in adhesive dental resin. Herein, we report the preparation of a new hydrogel containing sulfinic acid groups from sodium 4‐vinylbenzenesulfinate and 2‐hydroxyethyl methacrylate using a radical polymerization reaction and the subsequent incorporation of Ca 2+ ions into this material. We also investigated the apatite‐forming behavior of these hydrogels in SBF. Hydrogels containing sulfinic acid groups showed higher apatite‐forming ability than those without sulfinic acid groups. In addition, the apatite layer formed on the former showed tight adhesion to the hydrogel. This phenomenon was attributed to the heterogeneous nucleation of apatite, induced by the sulfinic acid groups. ? 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1924–1929, 2017.
机译:抽象的天然骨由磷灰石和胶原纤维组成。能够粘合到骨组织的生物活性材料在临床上用作骨修复材料。磷灰石 - 有机聚合物复合材料表现出与天然骨类似的骨粘合能力和机械性能,并且这些材料可以在模拟体液(SBF)中使用仿生方法制备。已知特异性官能团如磺酸和羧酸基团,诱导SBF中磷灰石的非均相成核。然而,尽管在生物医学应用中用于粘合剂牙科树脂中的自由基聚合启动子,但仍然不清楚是否以相同的方式有助于以相同的方式有助于磷灰石形成。在此,我们将使用自由基聚合反应和随后将Ca 2+离子掺入该材料中,从4-乙烯基苯磺酸钠和2-羟乙基甲基丙烯酸甲酯的含硫酸基团的制备制备。我们还在SBF中研究了这些水凝胶的磷灰石形成行为。含有硫酸基团的水凝胶显示比没有硫酸基团的磷酸盐形成更高的能力。另外,在前者上形成的磷灰石层显示到水凝胶的紧密粘附。这种现象归因于磷灰石的异质成核,由硫酸基团诱导。还2016 Wiley期刊,Inc。J生物保解率B部分:苹果生物摩特,105B:1924-1929,2017。

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