A Study on the Industrialization of PEO Nano-fiber Film by Electro-spun Process

Abstract

Electro-spun technical principles had been studied and applied at present. But there were some problem need to be surmounted for industrialization, for example, low throughput, variation of fiber diameter and basis weight. This study included three steps for industrialization of electro-spun process to solve above problems for nano-fiber film. The condition of 5% wt of PEO solution (PEO is 300,000 g/mol) was used in this study．Firstly, the suitable collector and supporting media were established through full-factorial experiments and images analysis. A non-embossed spun-bond nonwoven was used as a supporting media and a flat metal plate was selected as a collector in this study. Secondly, the optimum electro-spun parameters were found by using a full-factorial experiment for varied with working voltage, throughout, CSD by SEM analysis. The results was shown that the average of fiber diameter was 578.69 nm and its CV% of fiber diameter was 13.46% in the process parameters of 42 cm CSD for 41 kV working voltage and 0.3573 mL/min throughput. Third, trial-run with the result of first and second steps, the filtration efficiency was 91.2% with pressure drop 13.8 mm-H 2O by TSI 8130 (32 LPM, 5 % NaCl) analysis.