超坚固的导电水凝通过梯度破解型伪干燥策略实现
Dongchao Ji1, Hongyang Han2, Jiajun Li1
1National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, 150001, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|September 29, 2025
概括
研究人员开发了一种模仿生物组织的新型水凝,使用渐变键破解策略. 这种仿生方法提高了机械性能,为灵活的电子和生物传感器创造了坚固的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 聚合物化学 聚合物化学
背景情况:
- 水凝是具有显著生物医学潜力的水友性聚合物网络.
- 传统的水凝在实现高强度,模量,性和抗破裂性方面存在局限性.
- 脱水和低温结晶进一步限制了水凝的应用.
研究的目的:
- 通过开发生物模拟梯度破解策略来解决传统水凝的局限性.
- 创建具有增强机械性能的水凝,包括高强度,模量和性.
- 探索这些先进的水凝在柔性电子和生物传感器中的潜力.
主要方法:
- 构造的水凝具有共交联的等级强化相:晶体域和阿拉米德纳米纤维 (ANF) 网络.
- 纳入了生物模拟梯度在缺水阶段内的断键机制.
- 通过受控的制造参数,具有可调整的机械性能的制造水凝.
主要成果:
- 在70%的含水量下达到12.4 MPa的模量,73.66 MJ m-3的性和268.8 kJ m-2的破裂性.
- 证明了与干燥材料相比的抗破裂性能.
- 具有广泛的温度稳定性,高导电性和细胞相容性.
结论:
- 生物模拟梯度破解策略成功增强了水凝的机械性能.
- 开发的水凝在性能上超过现有的基于PVA的水凝和天然结构材料.
- 成功开发了一种低温可操作的应变传感器,展示了该材料在灵活电子产品中的实际应用.
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