Optimising low molecular weight hydrogels for automated 3D printing.
Optimising low molecular weight hydrogels for automated 3D printing.
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DOI：
10.1039/c7sm01694h
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发表时间：
2017-11
期刊：
影响因子：
3.4
通讯作者：
M. C. Nolan;Ana M Fuentes Caparrós;Bart Dietrich;Michael Barrow;Emily R. Cross;M. Bleuel;S. King;D. Adams
中科院分区：
文献类型：
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作者：
M. C. Nolan;Ana M Fuentes Caparrós;Bart Dietrich;Michael Barrow;Emily R. Cross;M. Bleuel;S. King;D. Adams
由低分子量胶凝剂（LMWG）制备的水凝胶是由于胶凝剂之间分层分子间相互作用形成纤维而形成的，然后自组装纤维之间通过物理缠结以及潜在的支化点进一步相互作用。这些相互作用可以使水凝胶在施加高剪切速率后快速恢复。目前，描述 LMWG 水凝胶用作有效的可打印凝胶需要哪些类型的形态或流变特性的设计规则有限。通过制备具有不同类型纤维网络结构的水凝胶，我们能够使用流变学、小角散射和显微镜等一系列技术更详细地了解产生可 3D 打印水凝胶的形态类型。
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.