Thermo‐rheological and interfacial properties of polylactic acid/polyethylene glycol blends toward the melt electrospinning ability

摘要: The electrospinning ability of PLA/PEG system at the melt state was investigated through viscoelastic parameters obtained from dynamic shear and extensional rheometers. PLA PEG were melt-blended various composition ratios. Effect concentration on thermal behavior studied by differential scanning calorimetry (DSC). According to DSC wide-angle X-ray diffraction, crystallinity increased crystalline structure became more completed (α-crystal form) in presence PEG. Viscoelastic such as zero-shear viscosity relaxation time an indication elasticity obtained. results revealed enhanced polymer chain mobility disentanglement ought plasticizing effect critical content about 20–30 wt % which solid–liquid phase separation occurred good agreement with properties. Hence, than 20% diminished strength zero. interfacial tension estimated rheological morphological evidenced miscibility electrospinnig temperature. While high viscose samples (η0 > 1800 Pa/s) (95/5) not spinnable spinning temperature 180 °C, blends containing 10–30% easily spun. finest continuous fiber mats (80/20) blend (df = 4.8 ± 0.8 μm). More (Φ > 30%), lacking suppressed electro-spinnability PLA/PEG. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44120.