Effects of ethylene content of poly(ethylene‐co‐vinyl alcohol) on diameter of fibers produced by melt‐electrospinning
Effects of ethylene content of poly(ethylene‐co‐vinyl alcohol) on diameter of fibers produced by melt‐electrospinning
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DOI：
10.1002/app.25872
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发表时间：
2007-04
影响因子：
3
通讯作者：
N. Ogata;Gang Lu;T. Iwata;Shinji Yamaguchi;K. Nakane;T. Ogihara
中科院分区：
文献类型：
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作者：
N. Ogata;Gang Lu;T. Iwata;Shinji Yamaguchi;K. Nakane;T. Ogihara
棒状样品由四种不同乙烯含量的聚乙烯醇 (EVAL) 颗粒制成。使用配备二氧化碳激光熔融装置的熔融静电纺丝系统从这些棒状样品中生产纤维。研究了乙烯含量对棒状样品纤维直径和回潮率的影响。此外，还研究了纤维的物理性能。得出以下结论：（i）利用所开发的系统可以获得平均纤维直径小于1μm的EVAL纤维； (ii) EVAL纤维的直径受乙烯含量和起始棒回潮率的影响； (iii)激光加热不会大幅降低EVAL的熔点和分子量； (iv) 在电纺 EVAL 纤维中可以看到优选的晶体取向。 © 2007 Wiley periodicals, Inc. J Appl Polym Sci 104: 1368–1375, 2007
Rodlike samples were made from four kinds of poly(ethylene-co-vinyl alcohol) (EVAL) pellets with different ethylene contents. From these rodlike samples, fibers were produced using a melt-electrospinning system equipped with a CO2-laser melting device. The effects on the fiber diameter of the ethylene content and the moisture regain of the rodlike samples were investigated. Furthermore, the physical properties of the fibers were investigated. The following conclusions were reached: (i) EVAL fibers having an average fiber diameter smaller than 1 μm can be obtained using the system developed; (ii) the diameter of EVAL fiber is influenced by the ethylene content and the moisture regain of the starting rods; (iii) the laser heating does not greatly decrease the melting point and the molecular weight of EVAL; and (iv) preferred crystal orientation can be seen in electrospun EVAL fibers. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 1368–1375, 2007