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用于医疗应用的体温响应热形状记忆聚氨的制备和表征
Xiaoqing Yang1,2, Zhipeng Han3,4, Chengqi Jia2,5,6
1Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
Polymers
|August 12, 2023
概括
研究人员开发了一种用于医疗设备的新型形状记忆聚氨 (SMPU). 这种生物相容材料在体温下表现出极好的形状恢复,为先进的医疗保健应用提供了有前途的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 生物材料是一种生物材料.
背景情况:
- 形状记忆聚合物 (SMP) 与合金和陶等传统材料相比具有优势.
- 形状记忆聚氨 (SMPU) 由于生物相容性和可调节性质,尤其具有前景.
- 当前SMPU的局限性包括合成复杂性,热响应依赖性和低模量.
研究的目的:
- 合成一种新型的耐热形状记忆聚氨 (SMPU),其热过渡温度接近身体温度.
- 研究不同软链分子重量和交联密度对SMPU特性的影响.
- 开发一种适合于方便医疗应用的生物相容SMPU.
主要方法:
- 作为软片段使用了聚乙烯二醇 (PCL-2OH),作为硬片段使用了异二酸盐 (IPDI).
- 纳入甘 (GL) 作为交联剂,以创建一个热固性SMPU.
- 系统地改变IPDI:PCL-2OH:GL的摩尔比,以优化材料性能.
主要成果:
- 确定了IPDI:PCL-2OH:GL (2:1.5:0.33) 的最佳摩尔比率,以获得卓越的综合性能.
- 实现了在体温上触发的形状记忆恢复.
- 显示高可回收性应变率高达450%.
结论:
- 开发的SMPU在体温下表现出优异的形状记忆特性,非常适合医疗应用.
- 这种材料显示出在医疗器械中使用的巨大潜力,有助于医疗保健的进步.
- 这项研究强调了通过控制合成来成功地定制SMPU属性,以满足特定的生物医学需求.
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