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基于纤维素的气凝纤维具有增强的热绝缘和湿度反应的机械性能
Yan Yu1, Ziheng Zhuang1, Weijie Zhang1
1College of Textile Science and Engineering, Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China.
International journal of biological macromolecules
|August 24, 2025
概括
新的细菌纤维素/石墨烯氧化物/多二甲基化物 (BC/GO/PDDA) 气凝纤维提供了优良的隔热和增强的机械强度. 这些多功能纤维对灵活的可穿戴传感器具有很高的灵敏度.
科学领域:
- 材料科学
- 纳米技术
- 聚合物科学
背景情况:
- 空气凝纤维是优秀的热绝缘体,因为它们具有高透性和低导热性.
- 现有的气凝纤维通常具有不良的机械性能和有限的功能.
- 细菌纤维素 (BC) 和石墨烯氧化物 (GO) 是先进气凝的有希望的成分.
研究的目的:
- 开发具有改进机械性能和增加功能的新型BC/GO气凝纤维.
- 研究表面修改的BC/GO气凝纤维的热绝缘,机械和传感能力.
- 探索这些复合气凝纤维在隔热和可穿戴电子产品中的潜力.
主要方法:
- 使用湿技术制造BC/GO气凝纤维.
- 使用聚二甲基化物 (PDDA) 进行了表面修饰.
- 特性包括孔径,孔径大小,拉伸强度,破裂时的延长,性和电导度测量. 在模拟呼吸条件下评估了性能.
主要成果:
- BC/GO/PDDA气凝纤维具有高孔径 (82.3%) 和小孔径 (<50 nm),确保了令人满意的热绝缘.
- 实现了增强的机械性能:拉力强度为0.409 MPa,破裂时的延长率为50.91%,性为140.44 kJ m-3.
- 在模拟呼吸试验中,复合气凝纤维显示了依赖湿度的电导率和快速响应时间 (1.8秒).
结论:
- 开发的BC/GO/PDDA气凝纤维具有热绝缘性和机械强度的有希望的组合.
- 用PDDA修改表面显著提高了机械性能,并引入了传感能力.
- 这些先进的气凝纤维在保温面料和柔性可穿戴传感器中具有相当大的应用潜力.
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