通过4D打印响应性纤维素复合材料的极性驱动形状转换来实现动态溶剂响应
Sanchita Dhanchandra Sangave1, Purushottam Suryavanshi1, Srushti Lekurwale1
1Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sila Katamur (Halugurisuk), Changsari Kamrup, Guwahati 781101, India.
ACS applied bio materials
|January 26, 2026
概括
这项研究介绍了具有可调整形状记忆行为的4D打印响应性纤维素复合材料 (RCC) 条. 材料 材料 的材料.
科学领域:
- 增材制造 增材制造 增材制造
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 四维 (4D) 打印可以实现动态的,对刺激有反应的结构.
- 增材制造正在以对刺激有反应的材料发展.
研究的目的:
- 开发4D打印的响应性纤维素复合材料 (RCC) 条.
- 为了研究RCC条的溶剂响应形状记忆行为.
主要方法:
- 化丝制造 (FFF) 技术被用来制造RCC条带,其中AFFINISOL (AFF) 和热塑性粉 (TPS) 的比例各不相同.
- 描述包括热性质,液体吸收和溶剂响应形状记忆行为评估,使用不同极性的水和溶剂.
主要成果:
- 4D打印的RCC条带表现出97-104°C之间的玻璃过渡温度 (Tg) 和高流体吸收率 (~70%在4小时内).
- 在105分钟内,在水中达到0.98的最大形状恢复指数 (SRI).
- 形状恢复率取决于溶剂极性,在乙醇中恢复受阻,在n-hexane中没有恢复,归因于矩阵-溶剂相互作用和扩散率.
结论:
- 这项研究为4D打印的RCC条纹中具有创新性的溶剂响应形状记忆行为奠定了基础.
- 这些发现凸显了FFF介导的4D打印RCC条带在生物医学工程,组织工程,软机器人学和可重新配置系统中的应用潜力.
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