One-step melt-blowing of multi-scale micro/nano fabric membrane for advanced air-filtration

Meltblown technology for production of polymeric microfibers/nanofibers: A review

“…MB process includes five constituents that are the extruder, metering pump, die assembly, web formation and winding [1,8]. The polymer in the form of pellets, granules, powder or chips is gravity-fed from hopper to the extruder at a certain feed rate [8,9,10].…”

“…The most typical MB products, together with their application fields, are provided in Table 5. MB technology is also utilized in area of battery separators [4,124], oil sorbents [125], bone tissue engineering [126] and filtration [9,69,127,128].…”

“…It has been suggested that high stability of LCB-PP blend can be explained by its higher stretchability at very high deformation rates (occurring at the die exit where an intensive fiber attenuation takes the place) and its lower stretchability at medium and low deformation rates, at which melt/air inertia driven bending instability called whipping occurs. Deng N. et al [9] showed that utilization of the incompatible blend system (namely mixture of PP and PS) can increase fiber diameter variation considerably due to continues fluctuation of blend viscosity during MB process as visible in Figure 19. Creation of even helical microfibers with a three-dimensional spiral shape from polypropylene (PP)/thermoplastic polyurethane (TPU) incompatible blend was also reported [169] (see Figure 20).…”

Surface Modification of TiO2 @Pvc Composite Membrane for Textiledye House (Brome Phenol Blue) Filtration

“…For all experiments, we operated at constant Cross Flow Velocity (CFV = 4 m/s). The permeate was not recycled in the feed tank [11]. A membrane TiO 2 @PVC composite membrane flat sheet was used to filter the colored solutions.…”

Branched polyethylene glycol/polypropylene micro-nanofiber nonwovens for fast liquid planar transmission

“…19,20 Meanwhile, due to the solvent-free process, melt blowing is an environmentalfriendly method for highly efficient production of micronanofiber nonwovens in comparison with the solution electrospinning, direct spinning, and conjugate-splitting spinning. 21,22 At present, the modified melt-blowing technologies, including modifying polymer properties and melt temperature, have recently been investigated to reduce fiber diameter and control the distribution of fiber diameter. [23][24][25][26] Zhao and Wadsworth 27 added polyethylene terephthalate (PET) to polypropylene (PP) to fabricate the melt-blown nonwovens, finding that the fiber diameter distributions were broadened from dozens of micrometers to a few micrometers.…”