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2D Nanosilicate for additive manufacturing: Rheological modifier, sacrificial ink and support bath

Bioprinting 2022年 25卷

作者： Rajput, Satyam Deo, Kaivalya A. Mathur, Tanmay Lokhande, Giriraj Singh, Kanwar Abhay Sun, Yuxiang Alge, Daniel L. Jain, Abhishek Sarkar, Tapasree Roy Gaharwar, Akhilesh K. Department of Biomedical Engineering College of Engineering Texas A&M University College Station 77843 TX United States Nutrition College of Agriculture and Life Sciences Texas A&M University College Station 77843 TX United States Department of Material Science and Engineering College of Engineering Texas A&M University College Station 77843 TX United States Department of Biology Texas A&M University College Station 77843 TX United States Interdisiplinary Program in Genetics Texas A&M University College Station 77843 TX United States Center for Remote Health Technologies and Systems Texas A&M University College Station 77843 TX United States Department of Medical Physiology College of Medicine Texas A&M Health Science Center Bryan 77807 TX United States Department of Cardiovascular Sciences Houston Methodist Institute for Academic Medicine Houston Methodist Research Institute Houston 77030 TX United States

Extrusion-based 3D printing/bioprinting is a promising approach to generate patient-specific tissue engineered grafts. However, a major challenge in extrusion-based 3D printing/bioprinting is that most currently used materials lack the versatility to be used in a wide range of applications. In this study, we introduce colloidal solutions of two-dimensional (2D) nanosilicates as a platform technology to print complex structures via three different approaches. In the first approach, we designed a shear-thinning ink composed of nanosilicates, which can be further reinforced by adding different types of water-soluble polymers. In the second approach, we demonstrated the use of nanosilicates as a sacrificial ink to design microfluidic devices for in vitro disease modelling. In the third approach, we utilized a colloidal nanosilicate gel as a support bath for 3D printing by nullifying the surface tension and gravitational forces. Due to their exceptional versatility, nanosilicate-based biomaterials could be widely adopted in the fields of additive manufacturing, tissue engineering, drug delivery, and medical devices. © 2022 Elsevier B.V.

关键词： 3D printing / bioprinting Additive manufacturing Biomaterials ink Nanoparticles Regenerative medicine

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