Construction of Porous High Moisture Absorption PET Fibers by Hard Template Method
Regenerated polyethylene terephthalate (PET) and CaCO3 microparticles were blended into masterbatch by twin-screw extruder,and PET fibers with porous structures were prepared by melt spinning and acid treatment.The experimental results showed that the hygroscopicity of porous PET fibers reached 1.36%,which was 4.5 times of the nominal value.The prepared porous PET fibers had the advantages of uniform pore distribution,high spinnability and high hydrophilicity.