Online wide‐angle X‐ray diffraction/small‐angle X‐ray scattering measurements for the CO2‐laser‐heated drawing of poly(ethylene terephthalate) fiber
Online wide‐angle X‐ray diffraction/small‐angle X‐ray scattering measurements for the CO2‐laser‐heated drawing of poly(ethylene terephthalate) fiber
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DOI：
10.1002/polb.20398
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
T. Yamaguchi;Kohei Komoriyama;Y. Ohkoshi;H. Urakawa;Y. Gotoh;Norihisa Terasawa;M. Nagura;K. Kajiwara
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文献类型：
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作者：
T. Yamaguchi;Kohei Komoriyama;Y. Ohkoshi;H. Urakawa;Y. Gotoh;Norihisa Terasawa;M. Nagura;K. Kajiwara
采用高亮度X射线源和CO2激光加热拉伸系统对聚对苯二甲酸乙二酯（PET）纤维拉伸过程中的纤维结构发展进行了广角和小角X射线散射在线测量。透射X射线的强度分布证实了缩颈点的位置。衍射图像的时间分辨率为几毫秒，这仍然有很大的改进空间。在颈缩后约20 ms，晶体衍射几乎瞬间出现在广角X射线图像中，而颈缩后立即出现四点小角X射线散射图案。随着颈缩后时间的延长，四点散射模式转变为双点散射模式。© 2005 Wiley Periodicals，Inc.聚合物科学杂志B部分：聚合物物理43：1090-1099，2005
Fiber-structure-development in the poly(ethylene terephthalate) fiber drawing process was investigated with online measurements of wide-angle and small-angle X-ray scattering with both a high-luminance X-ray source and a CO2-laser-heated drawing system. The intensity profile of the transmitted X-ray confirmed the location of the neck-drawing point. The diffraction images had a time resolution of several milliseconds, and this still left much room for improvement. Crystal diffraction appeared in the wide-angle X-ray images almost instantaneously about 20 ms after necking, whereas a four-point small-angle X-ray scattering pattern appeared immediately after necking. With the elapse of time after necking, the four-point scattering pattern changed into a meridional two-point shape. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 1090–1099, 2005