Electrospinning of ultra-thin polymer fibers
Electrospinning of ultra-thin polymer fibers
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DOI：
10.1002/masy.19981270119
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发表时间：
1998-02-01
影响因子：
--
通讯作者：
Vancso, GJ
中科院分区：
文献类型：
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作者：
Jaeger, R;Bergshoef, MM;Vancso, GJ
利用静电纺丝技术从几种聚合物/溶剂体系中纺制出超薄纤维。电纺纤维的直径为16 nm~2微米，用原子力显微镜(AFM)和光学显微镜对纤维的形态进行了分析。对聚环氧乙烷(PEO)在水或氯仿中的溶解行为进行了较为详细的研究。从水溶液中纺制的PEO纤维呈现出“串珠”的形态。AFM研究表明，这些纤维的表面是高度有序的。如果PEO在氯仿中从溶液中纺丝，则可以避免“串珠”的形态；所得到的纤维显示出片层形态。聚乙烯醇(PVA)溶于水和醋酸纤维素溶于丙酮是另外两个聚合物/溶剂体系。在此基础上，对电纺过程进行了研究：测试了不同的实验布局，模拟了静电场，记录了电纺过程的伏安特性。
The electrospinning technique was used to spin ultra-thin fibers from several polymer/solvent systems. The diameter of the electrospun fibers ranged from 16 nm to 2 mu m. The morphology of these fibers was investigated with an atomic force microscope (AFM) and an optical microscope. Poly(ethylene oxide) (PEO) dissolved in water or chloroform was studied in greater detail. PEO fibers spun from aqueous solution show a "beads on a string" morphology. An AFM study showed that the surface of these fibers is highly ordered. The "beads on a string" morphology can be avoided if PEO is spun from solution in chloroform; the resulting fibers show a lamellar morphology. Polyvinylalcohol (PVA) dissolved in water and cellulose acetate dissolved in acetone were additional polymer/solvent systems which were investigated. Furthermore, the electrospinning process was studied: different experimental lay-outs were tested, electrostatic fields were simulated, and voltage-current characteristics of the electrospinning process were recorded.