The influence of the electrospinning parameters on the diameter of the polyethersulfone (PES) nanofibers was demonstrated using response surface methodology. The electrospinning parameters studied were lithium chloride (LiCl) concentration, PES concentration, feed rate, and tip-to-collector distance. The average fiber diameter was correlated to these factors by using a second-order polynomial function at a 95% confidence level. The statistical analysis indicated that LiCl concentration, PES concentration, and feed rate had the significant connection with the fiber diameter, and LiCl concentration was the most important factor in determining the fiber diameter. When LiCl concentration increased, the fiber diameter decreased, because with more LiCl that is added, more applied voltage is needed to overcome the electrostatic attractions. The interactive effect between PES concentration and feed rate, the interactive effect between PES concentration and tip-to-collector distance, and the quadratic coefficients of LiCl concentration were also found to be significant. The adjusted determination coefficient (R_adj²) of the model was calculated to be 0.9106. The water flux measurements showed that the decrease in the fiber diameter of the membrane caused the decrease in the initial pure water flux. The retention tests with 0.6 μm polystyrene (PS) suspension indicated that as the fiber diameter decreased, the pore sizes decreased and the particle removal efficiency increased.

中文翻译：

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响应面法（RSM）研究包括LiCl在内的静电纺纳米纤维在水处理中的参数化研究

使用响应表面方法论证了电纺丝参数对聚醚砜（PES）纳米纤维直径的影响。研究的电纺丝参数为氯化锂（LiCl）浓度，PES浓度，进料速率和吸头到集电极的距离。通过使用95％置信度下的二阶多项式函数，将平均纤维直径与这些因素相关联。统计分析表明，LiCl浓度，PES浓度和进料速率与纤维直径密切相关，而LiCl浓度是决定纤维直径的最重要因素。当LiCl浓度增加时，纤维直径减小，因为添加了更多的LiCl时，需要更多的施加电压来克服静电吸引。还发现PES浓度与进料速率之间的相互作用，PES浓度与尖端到收集器距离之间的相互作用以及LiCl浓度的二次系数也很显着。调整后的确定系数（R该模型的_adj ²）计算为0.9106。水通量测量结果表明，膜纤维直径的减小引起初始纯水通量的减小。用0.6μm聚苯乙烯（PS）悬浮液进行的保留测试表明，随着纤维直径的减小，孔径的减小和颗粒去除效率的提高。