In situ modification of bacterial cellulose nanostructure by adding CMC during the growth of Gluconacetobacter xylinus

Many studies focus on bacterial cellulose (BC) functioning as multi-function bio-resource polymers, due to its fine fiber network, biocompatibility, high water holding capacity, and high mechanical strength. However, BC exhibits poor rehydration after drying due to its high crystallinity. This study...

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Bibliographic Details
Published in:Cellulose (London) 2011-12, Vol.18 (6), p.1573-1583
Main Authors: Chen, Hui-Huang, Chen, Li-Chen, Huang, Huang-Chan, Lin, Shih-Bin
Format: Article
Language:English
Subjects:
Biocompatibility
Bioorganic Chemistry
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Composites
Crystal structure
Crystallinity
Electron microscopes
Fourier transforms
Glass
Infrared analysis
Natural Materials
Organic Chemistry
Physical Chemistry
Polymer Sciences
Sustainable Development
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Summary:Many studies focus on bacterial cellulose (BC) functioning as multi-function bio-resource polymers, due to its fine fiber network, biocompatibility, high water holding capacity, and high mechanical strength. However, BC exhibits poor rehydration after drying due to its high crystallinity. This study added carboxymethylcellulose (CMC) to a BC producing culture medium, which interfered with the formation of BC structure in situ. This process created a modified BC called CBC, whose mechanical strength was found weaker than BC. Scanning electron microscope (SEM) images showed that the cellulose network in CBC became denser. X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) analysis demonstrated that the addition of CMC reduced crystallinity. CBC also exhibited the highest rehydration ratio because of the lowest crystallinity at the 1.0% CMC addition level.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-011-9594-z