Journal article
Non-covalent crosslinkers for electrospun chitosan fibers
Carbohydrate polymers, v 95(1), pp 123-133
05 Jun 2013
PMID: 23618248
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Electrospun chitosan fibers have numerous potential in biomedical, food, and pharmaceutical applications. However, the mats formed are often not chemically stable in a wide range of pHs unless crosslinked. Here, we report on the use of glycerol phosphate (GP), tripolyphosphate (TPP) and tannic acid (TA) as a new set of non-covalent crosslinkers for electrospun chitosan fibers. Crosslinking with or without heat or base activation were performed either prior to (one-step or activated one-step) or after (two-step or activated two-step) electrospinning with either GP or TA. TPP crosslinking was performed in two-step and activated two-step. FESEM, FTIR and UV-vis transmittance at 600 nm were used to determine fiber surface morphology, chemical interactions and solubility in 1M AA (pH 3), water (~pH 6) and 1 M NaOH (pH 13), respectively. Crosslinking of chitosan with GP and TA yields fibers with a mean diameter range of 145-334 nm and 143-5554 nm, respectively. TPP crosslinking produced branched fibers with mean diameters of 117-462 nm range. Two-step chitosan-TA did not dissolve in 1M AA even after 72 h while all chitosan-TPP, activated two-step chitosan-TA and two-step heat activated chitosan-GP fibers survived in water after 72 h.
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Details
- Title
- Non-covalent crosslinkers for electrospun chitosan fibers
- Creators
- Marjorie A Kiechel - Materials Science and Engineering Department, Drexel University, Philadelphia, PA 19104, USACaroline L Schauer
- Publication Details
- Carbohydrate polymers, v 95(1), pp 123-133
- Publisher
- Elsevier; England
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000319029700017
- Scopus ID
- 2-s2.0-84875079032
- Other Identifier
- 991014877939604721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Applied
- Chemistry, Organic
- Polymer Science