高延展的聚烯胺/丝纤维素双网自粘水凝,用于灵活的可穿戴传感器
Yuan Tian1, Jie Shi2, Nanxiang He2
1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
Journal of colloid and interface science
|January 22, 2026
概括
这项研究开发了一种新的丝纤维素 (SF) 和聚烯胺 (PAM) 水凝,具有增强应变传感器特性. 添加酸修饰的减少石墨烯氧化物 (TA-rGO) 改善了灵活电子设备的导电性和粘附性.
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:
- 丝纤维素 (SF) 水凝为应变传感器提供生物相容性,但由于过度的β片结晶,其拉伸性和粘合性较差.
- 提高SF水凝的机械和粘合特性对于其在可穿戴电子设备中的实际应用至关重要.
研究的目的:
- 为了提高丝纤维素水凝的拉伸和粘合性能,以提高应变传感器性能.
- 开发一种新型的双网水凝系统,包括聚烯胺和酸修饰的减少石墨烯氧化物.
- 为灵活的电子应用创造一种导电和自粘的水凝.
主要方法:
- 通过将聚烯胺 (PAM) 引入丝纤维素 (SF) 系统来调节β片结晶,构建了一种双网络水凝.
- 加入了酸修饰的减少石墨烯氧化物 (TA-rGO),以赋予导电性并进一步增强粘附性.
- 优化了SF和石墨烯氧化物 (GO) 的比率,以在PTSG-4水凝中实现所需的机械和粘合性能.
主要成果:
- 开发的PAM/SF水凝显著提高了拉伸强度 (221.65kPa) 和断裂延伸 (1467.36%).
- PTSG-4水凝表现出极好的附着强度 (32.48 kPa在猪皮上) 和自我附着能力.
- 从这种水凝制造的应变传感器显示出高稳定性,灵敏度 (GF=9.43) 和广泛的测量范围 (1350%).
结论:
- 这种新型的双网水凝有效地克服了纯SF水凝的局限性,提供了卓越的机械和粘合性能.
- 纳入TA-rGO为先进的灵活电子设备提供了必不可少的导电性和附着性.
- 这种水凝为开发下一代可穿戴应变传感器和人类运动监控系统提供了一个有前途的平台.
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