Development of Melt Electrospun Fiber Thining Technology
Polymer melt electrospinning is a crucial approach for the green and efficient preparation of nanofibers.However,due to limitations such as high melt viscosity,poor electrical conductivity,and rapid jet cooling,the average diameter of the resulting fibers tends to range from hundreds of nanometers to tens of micrometers,which falls short of achieving nanomaterials with diameters less than 100 nm.The process of melt electrospinning involves various factors that influence fiber diameter,including driving force,surface tension,melt viscosity,and jet heat exchange rate.These factors interact with each other in a highly complex manner,making the fiber refinement mechanism in melt electrospinning extremely intricate.To address this issue comprehensively,this paper focused on two stages:Taylor cone formation and jet drafting refinement.It provided an inductive analysis of existing research mechanisms related to fiber refinement in melt electrospinning processes as well as explored relevant processes and materials involved.The study reveals that key aspects for achieving fiber refinement lie in device design aimed at reducing Taylor cone size;regulation of material systems to increase driving force while decreasing melt viscosity;and attempts to extend the time frame for jet drafting refinement.Additionally suggested research trends include designing a system for monitoring jet motion state and temperature change;developing special materials with high conductivity and low viscosity suitable for green spinning;as well as designing a blowing-absorbing airflow-assisted electrospinning system.
melt electrospinningTaylor conejet drafting refinementmelt viscositydriving force
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维普
