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Journal article
New crosslinkers for electrospun chitosan fibre mats. I. Chemical analysis
Journal of the Royal Society interface, v 9(75), pp 2551-2562
07 Oct 2012
PMID: 22628209
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Chitosan (CS), the deacetylated form of chitin, the second most abundant, natural polysaccharide, is attractive for applications in the biomedical field because of its biocompatibility and resorption rates, which are higher than chitin. Crosslinking improves chemical and mechanical stability of CS. Here, we report the successful utilization of a new set of crosslinkers for electrospun CS. Genipin, hexamethylene-1,6-diaminocarboxysulphonate (HDACS) and epichlorohydrin (ECH) have not been previously explored for crosslinking of electrospun CS. In this first part of a two-part publication, we report the morphology, determined by field emission scanning electron microscopy (FESEM), and chemical interactions, determined by Fourier transform infrared microscopy, respectively. FESEM revealed that CS could successfully be electrospun from trifluoroacetic acid with genipin, HDACS and ECH added to the solution. Diameters were 267 ± 199 nm, 644 ± 359 nm and 896 ± 435 nm for CS–genipin, CS–HDACS and CS–ECH, respectively. Short- (15 min) and long-term (72 h) dissolution tests (T600) were performed in acidic, neutral and basic pHs (3, 7 and 12). Post-spinning activation by heat and base to enhance crosslinking of CS–HDACS and CS–ECH decreased the fibre diameters and improved the stability. In the second part of this publication, we report the mechanical properties of the fibres.
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Details
- Title
- New crosslinkers for electrospun chitosan fibre mats. I. Chemical analysis
- Creators
- Marjorie S. Austero - Drexel University, Materials Science and EngineeringAmalie E. Donius - Drexel University, Materials Science and EngineeringUlrike G. K. Wegst - Drexel University, Materials Science and EngineeringCaroline L. Schauer (Corresponding Author) - Drexel University, Materials Science and Engineering
- Publication Details
- Journal of the Royal Society interface, v 9(75), pp 2551-2562
- Publisher
- The Royal Society
- Number of pages
- 12
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000308240400016
- Scopus ID
- 2-s2.0-84866250877
- Other Identifier
- 991019169786604721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Polymer Science