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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 9
BKCSDE 31(9)
September 20, 2010

Title	Particle Dispersibility Improvement of Polyester Fibers with a New Line Injection
Author	Seong Yoon Park, Hak Yong Kim, Fan Long Jin, Soo Jin Park
Keywords	Line injection system, Polyethylene terephthalate, Fiber, Dispersibility, TiO₂
Abstract	In order to develop a new line injection system for spin draw yarn (FD SDY) fibers, the effect of various parameters in extrusion and melt line conditions on the dispersion and distribution of TiO₂ particles within FD PET fibers was investigated. As a result, the dispersibility of TiO₂ particles in a PET matrix is found to depend on the particle size and its surface characteristics. Surface modification of TiO₂ by dimethyl polysiloxane resulted in the improved dispersibility and affinity of TiO₂ particles in the PET matrix. Especially, residence time, mixing temperature, and mixing shear rate in the new line injection system under the SDY spinning process were very important parameters to minimize the agglomeration of TiO₂ particles. The FD SDY prepared by the new line injection system was superior to those using the polymerization process and the conventional masterbatch chip dosing process in the color-L and color-b values of the fibers.
Page	2637 - 2643
Full Text	PDF

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