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Effects of hydrogen bonding on starch granule dissolution, spinnability of starch solution, and properties of electrospun starch fibers
journal contribution
posted on 2018-09-26, 00:00 authored by W Wang, H Wang, X Jin, Hong Wang, Tong Lin, Z ZhuThis paper reports the effects of hydrogen bonding on the starch granule dissolution, spinnability of the starch solution, and the properties of the electrospun starch fibers. Dissolution behaviors of the starch granules in dimethyl sulfoxide (DMSO) and water mixed solvents are characterized by confocal laser microscope, differential scanning calorimetry (DSC), and rheologic measurement. The starch granules are dissolved in the 100%DMSO or 6%H2O/94%DMSO solvent, resulting in good electrospinnability. On the other hand, the gelatinization behavior is observed for the starch granules in the 22%H2O/78%DMSO solvent, resulting in poor fiber formation during electrospinning. Infrared spectroscopy, DSC, x-ray diffraction, and mechanical property characterizations of the electrospun starch nanofibers suggest that the water content in the solvent plays an important role in the properties of the nanofibers. The dissolution behavior, electrospinnability, and the properties of the electrospun nanofibers are explained by the effects of the DMSO and H2O molecules on the ubiquitous hydrogen bonds in starch.
History
Journal
PolymerVolume
153Pagination
643 - 652Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0032-3861Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2018, Elsevier Ltd.Usage metrics
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