Carbohydrate Laboratory, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, PR China.
Carbohydrate Laboratory, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, PR China.
Int J Biol Macromol. 2021 Nov 1;190:601-606. doi: 10.1016/j.ijbiomac.2021.09.015. Epub 2021 Sep 9.
A green approach for the preparation of starch-based composite nanofibers using electrospinning was developed. The water-soluble sodium carboxymethyl starch (CMS) with DS 0.31 was prepared. The addition of co-blending polymer polyvinyl-alcohol (PVA) was attempted to improve the CMS solution spinnability, which blends from aqueous solution were prepared at different CMS/PVA weight ratios. The solution parameters including viscosity, surface tension and conductivity were measured and the morphologies of nanofibers were observed by SEM. Smooth, continuous, and defect-free nanofibers were successfully obtained range from the blend of CMS/PVA weight ratios of 10:90 to 80:20. Diameter distribution diagrams suggested that the diameter of the nanofibers reduced with the concentration of CMS increasing. This is the first report that the thin nanofiber (135.29 nm) with bead-free was obtained at the maximal CMS content of 50.0 wt% in the CMS/PVA blend. This study provided a green approach to produce starch-based nano-scale fibers.
采用静电纺丝法制备了基于淀粉的复合纳米纤维。制备了取代度为 0.31 的水溶性羧甲基淀粉（CMS）。尝试添加共混聚合物聚乙烯醇（PVA）以提高 CMS 溶液的可纺性，将其从水溶液中以不同的 CMS/PVA 重量比进行共混。测量了溶液的参数，包括粘度、表面张力和电导率，并通过 SEM 观察了纳米纤维的形态。成功获得了从 CMS/PVA 重量比为 10:90 到 80:20 的光滑、连续、无缺陷的纳米纤维。直径分布图谱表明，纳米纤维的直径随 CMS 浓度的增加而减小。这是首次在 CMS/PVA 共混物中 CMS 含量最大为 50.0wt%时，获得无珠状的细纳米纤维（135.29nm）的报道。本研究为生产基于淀粉的纳米级纤维提供了一种绿色方法。
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