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Tytuł:
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Shear-induced unidirectional deposition of bacterial cellulose microfibrils using rising bubble stream cultivation.
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Autorzy:
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Chae I; Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Bokhari SMQ; Department of Agricultural and Biological Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Chen X; Department of Chemistry, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Zu R; Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Liu K; Department of Agricultural and Biological Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Borhan A; Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Gopalan V; Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States; Department of Physics, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Catchmark JM; Department of Agricultural and Biological Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
Kim SH; Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States. Electronic address: .
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Źródło:
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Carbohydrate polymers [Carbohydr Polym] 2021 Mar 01; Vol. 255, pp. 117328. Date of Electronic Publication: 2020 Nov 03.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: <1992-> : Barking : Elsevier Applied Science Publishers
Original Publication: London [Eng.] : Applied Science Publishers, c1981-
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MeSH Terms:
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Acetobacteraceae/*chemistry
Cellulose/*chemistry
Microfibrils/*chemistry
Acetobacteraceae/physiology ; Air/analysis ; Biomechanical Phenomena ; Bioreactors ; Cellulose/ultrastructure ; Crystallization ; Glucans/chemistry ; Microfibrils/ultrastructure ; Rheology ; Stress, Mechanical
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Contributed Indexing:
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Keywords: Bacterial cellulose microfibrils; Bubble stream; Polar alignment; Shear stress; Sum frequency generation
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Substance Nomenclature:
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0 (Glucans)
9004-34-6 (Cellulose)
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SCR Organism:
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Komagataeibacter hansenii
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Entry Date(s):
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Date Created: 20210113 Date Completed: 20210408 Latest Revision: 20210408
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Update Code:
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20240105
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DOI:
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10.1016/j.carbpol.2020.117328
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PMID:
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33436171
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In crystalline cellulose I, all glucan chains are ordered from reducing ends to non-reducing ends. Thus, the polarity of individual chains is added forming a large dipole within the crystal. If one can engineer unidirectional alignment (parallel packing) of cellulose crystals, then it might be possible to utilize the material properties originating from polar crystalline structures. However, most post-synthesis manipulation methods reported so far can only achieve the uniaxial alignment with bi-directionality (antiparallel packing). Here, we report a method to induce the parallel packing of bacterial cellulose microfibrils by applying unidirectional shear stress during the synthesis and deposition through the rising bubble stream in a culture medium. Driving force for the alignment is explained with mathematical estimation of the shear stress. Evidences of the parallel alignment of crystalline cellulose Iα domains were obtained using nonlinear optical spectroscopy techniques.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
