Biofabrication of multifunctional nanocellulosic 3D structures: a facile and customizable route

Greca, Luiz G.; Lehtonen, Janika; Tardy, Blaise L.; Guo, Jiaqi; Rojas, Orlando J.

doi:10.1039/c7mh01139c

Cited by 99 publications

(95 citation statements)

References 181 publications

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“…This was accomplished by a biofabrication technique that relied on hydrophobic particles that prestabilized the air/water interface and resulted in a robust network of cellulose fibrils synthesized by bacteria. 119 As a starting point for related developments, the use of emulsions can be quite attractive. Figure 9, for example, illustrates the different possibilities, which include O/W or W/O emulsions in the presence of CNF (Figure 9a) or solubilized lignins in the stabilization of O/W emulsions (Figure 9b).…”

Section: Prospects and Conclusionmentioning

confidence: 99%

Adsorption and Assembly of Cellulosic and Lignin Colloids at Oil/Water Interfaces

et al. 2018

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The surface chemistry and adsorption behavior of submicrometer cellulosic and lignin particles have drawn wide-ranging interest in the scientific community. Here, we introduce their assembly at fluid/fluid interfaces in Pickering systems and discuss their role in reducing the oil/water interfacial tension, limiting flocculation and coalescence, and endowing given functional properties. We discuss the stabilization of multiphase systems by cellulosic and lignin colloids and the opportunities for their adoption. They can be used alone, as dual components, or in combination with amphiphilic molecules for the design of multiphase systems relevant to household products, paints, coatings, pharmaceutical, foodstuff, and cosmetic formulations. This invited feature article summarizes some of our work and that of colleagues to introduce the readers to this fascinating and topical area.

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Section: Prospects and Conclusionmentioning

confidence: 99%

Adsorption and Assembly of Cellulosic and Lignin Colloids at Oil/Water Interfaces

et al. 2018

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“…Moreover, nanocomposites, 8 film microstructuration 9 and nonflat 3D geometries 10,11 can also be attained during the biosynthetic process. Bacterial cellulose films are characterized by their light weight, transparency, thermal stability up to B280 1C, high mechanical flexibility and remarkably high tensile strength together with an exceptional liquid absorption capacity (up to 100 times its own weight in water), biocompatibility and nonimmunogenicity.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose films with multiple functional nanoparticles in confined spatial distribution

et al. 2019

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“…In addition, the substrates are not permeable to oxygen, which is essential for aerobic biosynthesis. Recently, a 3D structure of biopolymer was prepared by combining the aeration protocols that allow the medium surface to be controlled 22 . Complex 3D structures of BC with a resolution of about 50 µm were prepared in a mold with hydrophobic particles 22 .…”

Section: Introductionmentioning

confidence: 99%

Solid matrix-assisted printing for three-dimensional structuring of a viscoelastic medium surface

et al. 2019

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Gluconacetobacter xylinus (G. xylinus) metabolism is activated by oxygen, which makes the formation of an air-medium interface critical. Here we report solid matrix-assisted 3D printing (SMAP) of an incubation medium surface and the 3D fabrication of bacterial cellulose (BC) hydrogels by in situ biosynthesis of G. xylinus. A printing matrix of polytetrafluoroethylene (PTFE) microparticles and a hydrogel ink containing an incubation medium, bacteria, and cellulose nanofibers (CNFs) are used in the SMAP process. The hydrogel ink can be printed in the solid matrix with control over the topology and dimensional stability. Furthermore, bioactive bacteria produce BC hydrogels at the surface of the medium due to the permeability of oxygen through the PTFE microparticle layer. The flexibility of the design is verified by fabricating complex 3D structures that were not reported previously. The resulting tubular BC structures suggest future biomedical applications, such as artificial blood vessels and engineered vascular tissue scaffolding. The fabrication of a versatile free-form structure of BC has been challenged due to restricted oxygen supplies at the medium and the dimensional instability of hydrogel printing. SMAP is a solution to the problem of fabricating free-form biopolymer structures, providing both printability and design diversity.

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Biofabrication of multifunctional nanocellulosic 3D structures: a facile and customizable route

Abstract: We demonstrate a facile route for bacteria-based fabrication of 3D-shaped, hollow nanocellulosic objects and the new horizons enabled are also explored.

Cited by 99 publications

References 181 publications

Adsorption and Assembly of Cellulosic and Lignin Colloids at Oil/Water Interfaces

Adsorption and Assembly of Cellulosic and Lignin Colloids at Oil/Water Interfaces

Nanocellulose films with multiple functional nanoparticles in confined spatial distribution

Solid matrix-assisted printing for three-dimensional structuring of a viscoelastic medium surface

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