Influence of microfluidic flow rates on the propagation of nano/microcracks in liquid core
What is it about?
Therefore, the purpose of the present work is to study the conditions leading to the leakage of a liquid through the polymer sheath of melt-spun LCF and hollow fibers. For this, a newly developed specimen preparation technique is employed which, in combination with a microfluidics pump, allows to analyze the crack propagation phenomenon. The differences in crack propagation behavior observed for the two fibers under analysis are discussed.
Why is it important?
Liquid core and hollow fibers were spun from polypropylene and complex ester using multicomponent high-speed melt-spinning pilot plant. A new technique was developed for bundling melt-spun filaments and attaching to the microfluidic pump. Nano/microcrack-induced leakages during the microfluidic trials were used for crack analysis on fine polymeric fibers. Liquid core fibers showed less nano/microcracks compare to the hollow fibers.
The following have contributed to this page: Saeed Salimian