| 초록 |
Nanoscale materials can be rationally designed to exhibit novel and significantly improved physical, chemical, and biological properties, phenomena, and processes because of their sizes. Electrospinning produces continuous polymer with diameters in the sub-micron range through the action under the external electric field imposed on a polymer solution or melt. An electric field is used to create a charged jet of polymer solution. As this jet travels in air, so the solvent evaporates leaving behind a charged fiber that can be electrically deflected or collected on a metal target. In this study, we prepared high molecular weight atactic PVA (a-PVA) nanofabric using electrospinning. Also, the structure and properties of a-PVA nanofabrics with different number-average degrees of polymerization of 1,700 and 4,000, respectively, were investigated by scanning electron microscopy, differential scanning calorimetry, wide-angle X-ray diffractometer, and Instron. It was found that the molecular weight of PVA has a marked influence on the structure and physical properties of nanofabric produced.
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