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dc.contributor.authorWan-gyu, Hahm
dc.contributor.authorHiroshi, Ito
dc.contributor.authorTakeshi, Kikutani
dc.date.accessioned2009-08-23T05:58:10Z
dc.date.accessioned2020-08-05T07:08:23Z-
dc.date.available2009-08-23T05:58:10Z
dc.date.available2020-08-05T07:08:23Z-
dc.date.issued2007-08-15T02:34:51Z
dc.date.submitted2007-06-28
dc.identifier.urihttp://dspace.fcu.edu.tw/handle/2377/3877-
dc.description.abstractHigh-speed in-line drawing process, in which melt spinning and drawing processes are connected, is one of the most widely used processes for production of commodity fibers. In this study, on-line measurements of diameter, velocity and birefringence were conducted in the high-speed in-line drawing process of poly(ethylene terephthalate) (PET). Filament started to deform immediately after passing through the first godet roller. The maximum strain rate under the drawing condition of from 2 to 4 km/min reached a high value of 510 s-1. Birefringence of filament increased steeply in this region. Comparison of orientation development during melt spinning and drawing processes revealed that the birefringence measured in the high-speed spinning line showed lower values than that in the in-line drawing line at the same diameter. Structure evolution of in-line drawn filament prepared under various processing conditions was investigated through off-line measurements of wide-angle X-ray diffraction (WAXD), birefringence, and density. Although drawing temperature was slightly higher than the glass transition temperature (Tg) of PET, significant development of oriented mesophase was confirmed. At the same time, a sharp meridional (001’) peak, which is reported to be originated from well-ordered smectic-C phase, also was clearly observed. In-situ measurement of WAXD pattern during heating process of highly drawn filament revealed that the intensity of (001’) peak started to increase gradually below Tg and started to decrease above Tg. Along with the reduction of the intensity of (001’), crystalline reflections of ordinary triclinic crystal started to appear above Tg, indicating that the mesophase acts as a transitional precursor for crystallization.
dc.description.sponsorship中華民國紡織工程學會
dc.description.sponsorship逢甲大學
dc.format.extent6p.
dc.format.extent702188 bytes
dc.format.mimetypeapplication/pdf
dc.language.isozh_TW
dc.relation.ispartofseries第九屆亞太紡織國際會議
dc.subjectbirefringence
dc.subjectmesophase
dc.subjectin-line drawing
dc.subjectethylene terephthalate
dc.subjectpoly
dc.subjecton-line measurement
dc.titleAnalysis on Fiber Formation Behavior During High-speed In-line Drawing Process of Poly
dc.title.alternative聚對笨二甲酸乙二酯在高速紡絲延伸一步法中纖維成形行為之研究
分類:第九屆亞太紡織國際會議

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