通过调节水-纤维素-共聚物相互作用,通过相互连接的空心微纤维网络加强超强的水凝
Yifang Zhou1, Junqing Chen1, Ziyang Lu1
1Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei Provincial Engineering Research Center of Emerging Functional Coating Materials, School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China.
我们使用一种新的纤维素微纤维网络开发了超强的水凝. 这一策略显著提高了机械性能,为先进的材料设计提供了实用途径.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 生物材料是一种生物材料.
背景情况:
- 不连续的纤维增强水凝经常由于负载下的纤维矩阵断裂而失败.
- 现有的水凝需要提高承载应用的机械强度.
研究的目的:
- 开发一种用于制造具有非凡机械性能的水凝的新策略.
- 研究在多个尺度上相互连接的自然光纤网络的协同增强.
主要方法:
- 在纤维素微纤维网上通过AA和AM的共聚合合成P ((AA-AM) /Cel水凝.
- 使用纸张与一个相互连接的空心纤维素微纤维网络作为基板.
- 研究了水,纤维素和共聚物之间的相互作用,用于机械增强.
主要成果:
- 实现了强度增加253倍 (27.8 MPa),断裂工作增加137倍 (3.59 MJ m-3),以及断裂能量增加235倍 (16.48 kJ m-2).
- 该P ((AA-AM) 网络填充了空心纤维素纤维,形成强键和接纤维连接点.
- 证明了对纤维滑落和断裂的增强抵抗力.
结论:
- 协同增强策略为设计超强水凝提供了一个实用和通用的路径.
- 开发的水凝由于集成的纤维网络和聚合物矩阵,具有出色的机械性能.
- 这种方法突显了调节水-纤维素-共聚物相互作用的有效性,以实现机械增强.
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