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Updated: May 22, 2026
Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
Effect of octenyl succinic anhydride modification on the structure and functionality of electrospun starch nanofibers
Songnan Li1, Chaohui Sun2, Panpan Cao2
1Joint International Research Laboratory of Agriculture and Agri-Product Safety, Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
Abstract:
The functional properties of starch nanofibers from traditional electrospinning methods are limited, which restricts their practical applications. This study used high amylose starch (HAS) as the raw material and formic acid (FA) as the solvent, to further explore the effects of octenyl succinic anhydride (OSA; 0, 3, 5 and 10% substitutions) modification on the structural and functional properties of electrospun starch nanofibers. All OSA-modified starch fibrous films (FFs) were white and smooth in appearance, and showed continuous, bead-free, and randomly oriented nanofibers with uniform distributions. With 3% to 10% OSA addition, their average thickness increased from 55 to 68 μm, the average fiber diameter decreased from 236 to 179 nm, and the degree of substitution (DS) of FA and OSA groups both increased. However, 10% OSA HAS-FFs with higher DS values had a lower water contact angle (27.5°), a lower maximum degradation temperature (321.3 °C), a lower elongation at break (10.6%) and tensile strength (1.97 MPa). These findings could be useful for designing new multifunctional starch nanofibers from electrospinning, contributing to the development and application of starch-based nanomaterials.
