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Commissioned by:
On Going Research


Credits:
Tammasat University- Food Research Department , University of Tokyo - T_ADS Advanced Design Studies

In-situ self-assembly fabrication

techniques for
bacterial cellulose bio-composites


Self-assembling manufacturing for natural polymers is still in its infancy despite the urgent need for alternatives to fuel-based products. As a matter of fact, non-fuel based products, specifically bio-polymers possess exceptional mechanical properties and biodegradability. Bacterial cellulose has proven to be a remarkably versatile biopolymer gaining attention in a wide variety of applied scientific applications such as electronics, biomedical devices, and tissue-engineering. In order to introduce bacterial cellulose as a building material it is important to develop bio-fabrication methodologies linked to material informed computational modeling and materialscience. The emphasis of this paper lies on the development of three dimensional grown Bacterial Cellulose (BC) membranes for large scale applications introducing new manufacturing technologies, combining the fields of bio-materials science,digital fabrication and material-informed computational modeling. This paper demonstrates a novel method for bacterial cellulose bio-synthesis as well as in-situ self-assembly fabrication and scaffolding techniques that are able to control three dimensional shapes and material behavior of BC. Furthermore it clarifies the factors affecting the bio-synthetic pathway of bacterial cellulose such as bacteria,
environmental conditions, nutrients and growth medium, altering the mechanical properties, tensile strength and thickness of bacterial cellulose. The transformation of bio-synthesis of bacterial cellulose into BC based bio-composite leads to the creation of new materials with additional functionality and properties. Potential applications range from small architectural components to large structures, linking formation and materialization achieving a material with specified ranges and gradient conditions, such as hydrophobic, hydrophilic capacity, graded mechanical properties over time, material responsiveness and biodegradability.

In-situ self-assembly fabrication

techniques for
bacterial cellulose bio-composites

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