Journal
ACS NANO
Volume 14, Issue 4, Pages 3885-3895Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b09956
Keywords
bacterial cellulose; polydopamine; biocompatible coatings; slippery coatings; self-grown coating
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Funding
- Swiss National Science Foundation [P300P2_171233]
- Swiss National Science Foundation postdoc mobility grant [P300P2_174468]
- U.S. National Institutes of Health [R01 DE014193, 1S10RR026866-01]
- Swiss National Science Foundation through the National Center of Competence in Research Bio-Inspired Materials
- Swiss National Science Foundation (SNF) [P300P2_174468, P300P2_171233] Funding Source: Swiss National Science Foundation (SNF)
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We report a versatile method to form bacterial cellulose coatings through simple dip-coating of 3D objects in suspensions of cellulose-producing bacteria. The adhesion of cellulose-secreting bacteria on objects was promoted through surface roughness and chemistry. Immobilized bacteria secreted highly porous hydrogels with high water content directly from the surface of a variety of materials. The out-of-plane orientation of cellulose fibers present in this coating leads to high mechanical stability and energy dissipation with minimal cellulose concentration. The conformal, biocompatible, and lubricious nature of the in situ grown cellulose surfaces makes the coated 3D objects attractive for biomedical applications.
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