可生物降解,耐磨和弹性热塑性聚碳酸基聚氨与纳米级微相结构
Shuang Su1, Jintao Wang2, Qi Yan1
1College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
Polymers
|June 27, 2025
概括
新的生物降解聚氨 (PPCDL-PEG1000-TPU) 显示出增强的机械性能,包括高强度和弹性. 这些先进材料具有出色的耐磨性和弹性,非常适合用于鞋类和减震应用.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 材料科学 材料科学 材料科学
- 生物材料是一种生物材料.
背景情况:
- 热塑性聚氨 (TPU) 是具有可调节性质的多功能聚合物.
- 可生物降解的聚合物越来越多地被寻求用于可持续材料应用.
- 将聚乙烯甘醇 (PEG) 纳入TPU结构可以改变机械和热特性.
研究的目的:
- 通过使用基于二氧化碳的聚碳酸二醇 (PPCDL) 合成和表征新型生物降解聚氨 (PPCDL-PEG1000-TPU).
- 研究 PEG1000 软段对基于 PPCDL 的 TPU 的结构性质关系的影响.
- 评估这些新型TPU在需要高性能和生物降解性的应用中的潜力.
主要方法:
- 化处理方法用于合成PPCDL-PEG1000-TPU.
- 特性包括分析纳米级微相分离,抗拉强度,破裂时的延长,硬度和耐磨性.
- 差分扫描热量计 (DSC) 用于确定玻璃过渡温度 (Tg).
主要成果:
- 合成的PPCDL-PEG1000-TPU证明了纳米级微相分离,从而改善了机械性能.
- 与没有PEG的PPCDL-TPU相比,拉力强度显著增加 (高达200%) 并且破裂时的延长显著改善 (高达75%).
- 材料具有出色的耐磨性 (Akron平均磨损容量在4000个循环后为12mm3),高弹性,可控制的硬度 (Shore A 70-85),良好的热稳定性,疏水性和低吸水性.
结论:
- 添加PEG1000作为软片段,可以提高基于PPCDL的TPU的机械性能,这是由于PEG结晶.
- PPCDL-PEG1000-TPU提供了一种有前途的生物降解性,机械强度,耐磨性和弹性组合.
- 这些材料具有很好的应用潜力,可用于鞋类和减震部件.
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