多响应形状记忆光热弹性体,基于未经改性和高含量素的光热弹性体
Ruige Qi1, Meng Zhang1, Yijiao Xue1
1Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, 210042, China.
International journal of biological macromolecules
|September 12, 2025
概括
这项研究开发了一种可持续的基于木质素的聚氨 (LPU) 弹性体,用于高效的光热转换. 该LPU材料具有出色的机械性能和形状记忆性能,在可再生能源和智能设备中提供有前途的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- 光热弹性体将光转化为热,对于可持续的智能材料至关重要.
- 从自然资源中开发环保光热材料符合碳中和目标.
研究的目的:
- 通过使用未经修改的 kraft lignin 合成高含量氨酸基聚氨 (LPU) 的光热弹性体.
- 评估合成LPU的机械,光热和形状记忆特性.
主要方法:
- 采用一合成方法,使用未经修改的膜过的 kraft 素.
- 特性包括机械测试 (强度,性,模量) 和光热/形状记忆性能评估.
主要成果:
- 该LPU表现出高机械强度 (25.6MPa),性 (51.8MJ·m-3) 和模量 (692.0MPa).
- LPU 显示了双模式光热转换 (冷光和近红外光) 和出色的热响应/光响应形状记忆 (回收率99.9%).
结论:
- 合成的LPU为创建高性能光热材料提供了一种可持续和绿色的方法.
- 在光热发电机,可编程形状存储器设备,智能标签和能源收获器中,LPU显示出很大的应用潜力.
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