Expanding the design space of gel materials through ionic liquid mediated mechanical and structural tuneability
Expanding the design space of gel materials through ionic liquid mediated mechanical and structural tuneability
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DOI：
10.1039/c9mh01496a
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发表时间：
2020-03-01
影响因子：
13.3
通讯作者：
Hallett, Jason P.
中科院分区：
文献类型：
--
作者：
Brogan, Alex P. S.;Clarke, Coby J.;Hallett, Jason P.
离子凝胶是一类新兴的软材料，由于高离子液体含量而具有卓越的性能。与其他凝胶系统相比，离子液体成分提供了额外的设计水平。然而，这种高度模块化的性质尚未得到充分探索，并且离子液体在凝胶基材料的结构特性中所发挥的作用知之甚少。在这里，系统的小角中子散射和 X 射线光电子能谱研究首次揭示了软材料的体结构和表面成分之间的关系。此外，我们还展示了离子液体设计如何决定聚合物结构，而聚合物结构又可用于微调离子凝胶的机械性能。由于对凝胶结构的控制水平超出了使用分子溶剂所能达到的水平，因此我们的系统研究提供了离子液体如何扩展凝胶开发设计空间以适应广泛应用的见解。
Ionogels are an emerging class of soft material with exceptional properties stemming from high ionic liquid content. In contrast to other gel systems, the ionic liquid component provides an extra level of design. However, this highly modular nature has yet to be fully explored and the role ionic liquids play in the structural properties of gel-based materials is poorly understood. Here, methodical small angle neutron scattering and X-ray photoelectron spectroscopy studies reveal the relationship between bulk structure and surface composition of a soft material for the first time. Furthermore, we show how ionic liquid design dictates polymer structure, which in turn can be harnessed to fine tune the mechanical properties of ionogels. With a level of control over gel structure beyond what is possible using molecular solvents, our systematic study thus provides insight into how ionic liquids can expand the design space for gel development for a broad range of applications.