Fig. 4From: Fabrication of CA/TPU Helical Nanofibers and its Mechanism AnalysisSEM images of two component systems of CA/TPU1 and CA/TPU2, in which the LiCl added in CA solution is from zero to 2 wt%. The processing condition is of 20 kV applied voltage, 15 cm working distance, and 0.15 ml/h flow rate for both component solutionsBack to article page