Polaskova Martina, Peer Petra, Cermak Roman, Ponizil Petr
Department of Polymer Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlín, Czech Republic.
Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic.
Polymers (Basel). 2019 Aug 23;11(9):1384. doi: 10.3390/polym11091384.
Post-process thermal treatment of electrospun fibers obtained from poly(ethylene oxide) (PEO) water and methanol solutions was examined. PEO fibers from methanol solution showed larger diameters as observed by scanning electron microscopy. Fibers both from water and methanol solutions exhibited a significant dimensional stability and surface cracking during the specific exposure time after thermal treatments at 40, 50, and 60 °C. Changes in crystallinity after the thermal treatment were studied by wide-angle X-ray diffraction. The kinetics of secondary crystallization were positively influenced by the as-processed level of the amorphous phase and temperature of thermal treatment. Samples treated at 60 °C were degraded by thermooxidation within the time.
对由聚环氧乙烷（PEO）水溶液和甲醇溶液制备的电纺纤维进行了后处理热处理研究。通过扫描电子显微镜观察发现，甲醇溶液中的PEO纤维直径更大。在40、50和60°C热处理后的特定暴露时间内，水溶液和甲醇溶液中的纤维均表现出显著的尺寸稳定性和表面开裂。通过广角X射线衍射研究了热处理后结晶度的变化。二次结晶动力学受到非晶相的加工态水平和热处理温度的正向影响。在该时间段内，60°C处理的样品因热氧化而降解。
