Journal
CARBOHYDRATE POLYMERS
Volume 83, Issue 1, Pages 239-245Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.07.042
Keywords
LBL; Electrospinning; Polysaccharide; Organic rectorite; Intercalation; Bacterial inhibition activity
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Funding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, China
- Introducing Talents of Discipline to Universities [111-2-04, B07024]
- National Natural Science Foundation of China [30972323]
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Organic rectorite (OREC) was used to prepare the intercalated composites with chitosan (CS). The negatively charged cellulose nanofibers hydrolyzed from electrospun cellulose acetate fibrous mats were modified with multilayers of the positively charged CS-OREC intercalated composite and the negatively charged sodium alginate (ALG) via layer-by-layer (LBL) technique. The morphology and antibacterial activity of the resultant samples were studied by regulating the number of deposition bilayers, the compositions of dipping solutions and outermost layer of films. Field emission scanning electron microscopy images indicated that the thickness of CS-OREC/ALG bilayer formed on fibers was estimated from 12 to 26 nm. Additionally, the energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy results indicated that CS and OREC were successfully deposited on cellulose fibers. The bacterial inhibition experiments demonstrated that LBL films modified fibrous cellulose mats with the addition of OREC can increase the degree of inhibition on Escherichia coli. (C) 2010 Elsevier Ltd. All rights reserved.
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