Wang Menglong, Hai Tao, Feng Zhangbin, Yu Deng-Guang, Yang Yaoyao, Bligh Sw Annie
School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China.
Caritas Institute of Higher Education, 2 Chui Ling Lane, Tseung Kwan O, New Territories, Hong Kong 999077, China.
Polymers (Basel). 2019 Aug 1;11(8):1287. doi: 10.3390/polym11081287.
The accurate prediction and manipulation of nanoscale product sizes is a major challenge in material processing. In this investigation, two process characteristics were explored during the modified coaxial electrospinning of zein, with the aim of understanding how this impacts the products formed. The characteristics studied were the spreading angle at the unstable region () and the length of the straight fluid jet (). An electrospinnable zein core solution was prepared and processed with a sheath comprising ethanolic solutions of LiCl. The width of the zein nanoribbons formed () was found to be more closely correlated with the spreading angle and straight fluid jet length than with the experimental parameters (the electrolyte concentrations and conductivity of the shell fluids). Linear equations = 546.44 - 666.04 and = 2255.3 - 22.7 could be developed with correlation coefficients of = 0.9845 and = 0.9924, respectively. These highly linear relationships reveal that the process characteristics can be very useful tools for both predicting the quality of the electrospun products, and manipulating their sizes for functional applications. This arises because any changes in the experimental parameters would have an influence on both the process characteristics and the solid products' properties.
在材料加工过程中，精确预测和控制纳米级产品尺寸是一项重大挑战。在本研究中，我们在玉米醇溶蛋白的改性同轴静电纺丝过程中探索了两个工艺特性，旨在了解其如何影响所形成的产品。所研究的特性是不稳定区域的扩展角（）和直流体射流的长度（）。制备了一种可静电纺丝的玉米醇溶蛋白核心溶液，并用包含LiCl乙醇溶液的鞘层进行处理。发现所形成的玉米醇溶蛋白纳米带的宽度（）与扩展角和直流体射流长度的相关性比与实验参数（壳层流体的电解质浓度和电导率）的相关性更强。可以分别建立线性方程 = 546.44 - 666.04和 = 2255.3 - 22.7，相关系数分别为 = 0.9845和 = 0.9924。这些高度线性的关系表明，工艺特性对于预测静电纺丝产品的质量以及为功能应用控制其尺寸都是非常有用的工具。这是因为实验参数的任何变化都会对工艺特性和固体产品的性能产生影响。
