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Electrospinning Highly Concentrated Sodium Alginate Nanofibres without Surfactants by Adding Fluorescent Carbon Dots

by Junke Yu 1,2,†, Zhihui Zhao 1,*,†, Jianxin Sun 1,2, Cunzhen Geng 1, Qingxu Bu 1,2, Dawei Wu 1,3 and Yanzhi Xia 1,*
1
State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China
2
School of Material Science and Engineering, Qingdao University, Qingdao 266071, China
3
School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
*
Authors to whom correspondence should be addressed.
Junke Yu and Zhihui Zhao are co-first authors of the article.
Nanomaterials 2020, 10(3), 565; https://doi.org/10.3390/nano10030565
Received: 7 February 2020 / Revised: 18 March 2020 / Accepted: 18 March 2020 / Published: 20 March 2020
In this study, sodium alginate (SA) nanofibres were obtained by electrospinning via the assistance of traditional poly(ethyl oxide) (PEO) and dimethyl sulfoxide (DMSO) with a high SA/PEO ratio of up to 94:6. However, surfactants with more or less toxicities were replaced by nontoxic and fluorescent carbon dots (CDs) to improve spinnability. Experimental details were conducted by fixing the ratio of SA/PEO to 90:10. Then, the electrospinning products of solutions with different compositions were observed with scanning electron microscopy. Properties such as conductivity, surface tension and rheology of the solutions were investigated to determine the key influencing factors. Moreover, since CDs have excellent fluorescence properties, the fluorescent properties of the nanofibre membrane that was blended with CDs were then collected. In addition, in vitro cytotoxicity assessment of the nanofibres were conducted to evaluate the toxicities and biocompatibility. View Full-Text
Keywords: sodium alginate; electrospinning; nanofibres sodium alginate; electrospinning; nanofibres
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Yu, J.; Zhao, Z.; Sun, J.; Geng, C.; Bu, Q.; Wu, D.; Xia, Y. Electrospinning Highly Concentrated Sodium Alginate Nanofibres without Surfactants by Adding Fluorescent Carbon Dots. Nanomaterials 2020, 10, 565.

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