@article{oai:soar-ir.repo.nii.ac.jp:00013517, author = {Yamaguchi, T and Kim, K and Murata, T and Koide, M and Hitoosa, S and Urakawa, H and Ohkoshi, Y and Gotoh, Y and Nagura, M and Kotera, M and Kajiwara, K}, issue = {19}, journal = {Journal of Polymer Science: Part B: Polymer Physics}, month = {Aug}, note = {This is a preprint of an article published in Journal of Polymer Science: Part B: Polymer Physics. 46(19): 2126-2142 (2008)., The initial stage of fiber structure development in the continuous neckdrawing of amorphous poly(ethylene terephthalate) fibers was analyzed by in situ wide-angle X-ray diffraction, small-angle X-ray scattering, and fiber temperature measurements. The time error of the measurements (\600 ls) was obtained by synchrotron X-ray source and laser irradiation heating. A highly ordered fibrillar-shaped two-dimensional (smectic-like) structure was found to be formed less than 1 ms after necking. By analyzing its (0010) and (0020) diffractions, the length of the structure 60–70 nm were obtained. A three-dimensionally ordered triclinic crystal began to form with the vanishing of the structure around 1 ms after necking. The amount and size of the crystal were almost saturated within several milliseconds of necking, during which time a mainly exothermic heat of crystallization was also observed., Article, Journal of Polymer Science: Part B: Polymer Physics. 46(19): 2126-2142 (2008)}, pages = {2126--2142}, title = {Initial Stage of Fiber Structure Development in the Continuous Drawing of Poly(ethylene terephthalate)}, volume = {46}, year = {2008} }