School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
Soft Matter. 2017 Nov 22;13(45):8426-8432. doi: 10.1039/c7sm01694h.
Hydrogels prepared from low molecular weight gelators (LMWGs) are formed as a result of hierarchical intermolecular interactions between gelators to form fibres, and then further interactions between the self-assembled fibres via physical entanglements, as well as potential branching points. These interactions can allow hydrogels to recover quickly after a high shear rate has been applied. There are currently limited design rules describing which types of morphology or rheological properties are required for a LMWG hydrogel to be used as an effective, printable gel. By preparing hydrogels with different types of fibrous network structures, we have been able to understand in more detail the morphological type which gives rise to a 3D-printable hydrogel using a range of techniques, including rheology, small angle scattering and microscopy.
由低分子量凝胶剂 (LMWG) 制备的水凝胶是由于凝胶剂之间的层次化分子间相互作用形成纤维，然后通过物理缠结以及潜在的分支点进一步自组装纤维之间的相互作用而形成的。这些相互作用可以使水凝胶在高剪切速率施加后迅速恢复。目前，关于哪种形态或流变性能的设计规则有限，描述了低分子量凝胶剂水凝胶作为有效、可打印凝胶的要求。通过制备具有不同类型纤维网络结构的水凝胶，我们能够使用包括流变学、小角散射和显微镜在内的一系列技术，更详细地了解导致 3D 可打印水凝胶的形态类型。
