在交叉链接过程中,氧酸盐添加剂对酸盐凝动力学的影响
Katarina Dimic-Misic1,2, Monir Imani3,4, Michael Gasik2
1Institute of General and Physical Chemistry, 11000 Belgrade, Serbia.
Polymers
|January 25, 2025
概括
发现酸盐 (AL) 水凝中的酸 (HAp) 颗粒可以物理屏蔽离子 (Ca2+),减缓凝动力学. 这种通过风学观察到的屏蔽效应导致最终水凝的孔隙性和脱水特性得到改善.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 类风病学 类风病学 类风病学
背景情况:
- 酸水凝由于其生物相容性和生物降解性,在生物医学应用中被广泛使用.
- 了解酸盐凝的动力学,特别是添加组件的动力学,对于控制材料特性至关重要.
- 关于填充物颗粒对酸盐交叉连接机制的影响的数据有限.
研究的目的:
- 研究含有酸填充颗粒的酸盐-化混合物的交叉连接机制和动力学.
- 阐明酸在改变凝过程和由此产生的水凝形态中的作用.
- 探索酸对酸盐水凝脱水特性的影响.
主要方法:
- 制备了酸 (AL) 和化 (CaCl2) 的水性混合物,酸 (HAp) 的度各不相同.
- 使用板式风湿计的风湿学测量被用来监测时间依赖的交联行为.
- 交联样本被冷干燥并使用光学显微镜和扫描电子显微镜 (SEM) 分析形态.
主要成果:
- 酸颗粒显著降低了离子和酸链之间的相互作用,这种现象被称为"物理屏蔽".
- 添加HAp导致交叉连接动力学减慢,并使风湿学参数的发展更加均.
- 加入HAp使酸盐水凝具有更均的孔隙性和更好的脱水特性.
结论:
- 离子对酸盐颗粒的物理屏蔽效应首次通过rheological方法被证明.
- 这种屏蔽现象允许控制凝,从而更好地操纵水凝的特性,如孔隙结构和机械稳定性.
- 这些发现提供了对酸盐凝交联动学的更深入的理解,这对于优化其在生物医学应用中的性能至关重要.
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