Revealing Novel Power Laws and Quantization in Electrospinning Considering Jet Splitting—Toward Predicting Fiber Diameter and Its Distribution Part II Experimental,Advanced Engineering Materials

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Revealing Novel Power Laws and Quantization in Electrospinning Considering Jet Splitting—Toward Predicting Fiber Diameter and Its Distribution Part II Experimental
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2021-01-12 , DOI: 10.1002/adem.202001161
Dirk W. Schubert _{1,

2} , Vincent Allen _{1,

2} , Ursula Dippel _{1,

2}

Affiliation

Blends of poly‐ϵ‐caprolactone (PCL) with two different molar masses are deliberately varied to change viscosity independent of polymer concentration enabling to separate viscosity and a direct concentration dependence of the fiber diameter in the electrospinning process. Multiple distributions as a result of jet splitting are determined and analyzed. The existence of essentially two modes in fiber diameter frequency distribution, the base mode and the split mode, is revealed, whereas the scaling laws for each mode can be validated according to the latest theory. Finally, the theoretical predicted upper limit

\frac{\sqrt{2}}{2}

of the ratio of standard deviation of fiber diameter and average fiber diameter is validated.

中文翻译：

在考虑旋流分裂的静电纺丝中揭示新的功率定律和量化-预测纤维直径及其分布第二部分实验

故意改变具有两种不同摩尔质量的聚己内酯（PCL）的混合物，以改变粘度而与聚合物浓度无关，从而可以在电纺过程中分离粘度和纤维直径的直接浓度依赖性。确定和分析由于射流分裂而引起的多种分布。揭示了光纤直径频率分布中基本存在两种模式，即基本模式和分裂模式，而每种模式的定标律都可以根据最新理论进行验证。最后，理论预测上限