Abstract
In this study, the optimal preparation conditions in the polymerization process of poly(ethylene terephthalate) (PET) were studied in detail. As a result, the dispersibility of <TEX>$TiO_2$</TEX> was significantly improved by the addition of dispersant and steric hinderance additives into <TEX>$TiO_2$</TEX>/ethylene glycol (EG) slurry during the esterification step. The addition sequence of <TEX>$TiO_2$</TEX>/EG slurry and stirring also affected the dispersibility of <TEX>$TiO_2$</TEX>. The SEM results showed that some <TEX>$TiO_2$</TEX> particles were agglomerated in the PET matrix. The full dull (FD) PET chip and fiber were prepared according to the optimal preparation conditions. The FD PET fiber exhibited a better dispersibility than that of the FD PET chip.
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