抄録
Permanganic etching was performed on the high-speed spun and regular fibers of poly (ethylene terephthalate)(PET), and their surface morphologies were investigated using a transmission electron microscope. The high-speed spun PET fibers which have low molecular orientation in the amorphous regions showed peculiar surface morphology. That is, lots of small voids reflecting the disordered amorphous regions were observed. However, the number of such voids was extremely small for the regular PET fibers which have well oriented amorphous regions.
