具有可调微相结构的蛋白质激发聚合物在水环境中实现自主自修复

IF 4.3 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Yanwen Hu, Yan Song, Guo Liang Li
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引用次数: 0

摘要

聚合物材料在水环境中的自愈合仍然是一项重大挑战。本文提出了一种受蛋白质启发的疏水/亲水微相分离策略,用于构建水环境中的自愈合聚合物。在自愈合过程中,由于水下存在动态疏水相互作用,受损区域的疏水聚二甲基硅氧烷微相相互重新结合。此外,亲水性羧基扩散和渗透形成氢键。研究发现,可以通过调节疏水/亲水成分来调整微相结构和自愈效率。合成聚合物在去离子水和海水环境中的自愈率分别达到 99.1% 和 98.7%。利用傅立叶变换红外光谱和紫外可见光谱对材料的分子结构进行了表征,同时利用小角 X 射线散射和原子力显微镜(AFM)对合成聚合物的聚集结构进行了检测。这种受生物科学启发的设计策略有望扩大合成本征自修复聚合物的应用范围,尤其是在水环境中的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Protein-Inspired Polymers with Tunable Microphase Structures toward Autonomous Self-Healing in Aqueous Environments

Protein-Inspired Polymers with Tunable Microphase Structures toward Autonomous Self-Healing in Aqueous Environments

The self-healing of polymer materials in aqueous environments remains a significant challenge. Herein, a protein-inspired strategy for hydrophobic/hydrophilic-induced microphase separation is proposed to construct self-healing polymers in an aqueous environment. During self-healing, the hydrophobic polydimethylsiloxane microphases in the damaged region reassociate with each other owing to the presence of dynamic hydrophobic interactions underwater. In addition, the hydrophilic carboxyl groups diffuse and penetrate to form hydrogen bonds. It is found that the microphase structure and self-healing efficiency can be adjusted by regulating the hydrophobic/hydrophilic components. The self-healing efficiencies of the as-synthesized polymers in deionized water and seawater environments reach to 99.1 and 98.7%, respectively. The molecular structures of the materials are characterized using Fourier-transform infrared spectroscopy and ultraviolet-visible spectroscopy while the aggregated structure of the as-synthesized polymers is examined using small angle X-ray scattering and atomic force microscopy (AFM). This design strategy, inspired by the biological sciences, will be expected to extend the application range of synthetic intrinsic self-healing polymers, especially in aqueous environments.

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来源期刊
Advanced Materials Interfaces
Advanced Materials Interfaces CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
8.40
自引率
5.60%
发文量
1174
审稿时长
1.3 months
期刊介绍: Advanced Materials Interfaces publishes top-level research on interface technologies and effects. Considering any interface formed between solids, liquids, and gases, the journal ensures an interdisciplinary blend of physics, chemistry, materials science, and life sciences. Advanced Materials Interfaces was launched in 2014 and received an Impact Factor of 4.834 in 2018. The scope of Advanced Materials Interfaces is dedicated to interfaces and surfaces that play an essential role in virtually all materials and devices. Physics, chemistry, materials science and life sciences blend to encourage new, cross-pollinating ideas, which will drive forward our understanding of the processes at the interface. Advanced Materials Interfaces covers all topics in interface-related research: Oil / water separation, Applications of nanostructured materials, 2D materials and heterostructures, Surfaces and interfaces in organic electronic devices, Catalysis and membranes, Self-assembly and nanopatterned surfaces, Composite and coating materials, Biointerfaces for technical and medical applications. Advanced Materials Interfaces provides a forum for topics on surface and interface science with a wide choice of formats: Reviews, Full Papers, and Communications, as well as Progress Reports and Research News.
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