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Effects of Injection Conditions on Dispersibility of TiO2 in Polymerization of Poly(ethylene terephthalate)

  • Park, Seong-Yoon ;
  • Kim, Hak-Yong ;
  • Jin, Fan-Long ;
  • Park, Soo-Jin
  • Received : 2010.03.08
  • Accepted : 2010.08.25
  • Published : 2010.10.20

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 $TiO_2$ was significantly improved by the addition of dispersant and steric hinderance additives into $TiO_2$/ethylene glycol (EG) slurry during the esterification step. The addition sequence of $TiO_2$/EG slurry and stirring also affected the dispersibility of $TiO_2$. The SEM results showed that some $TiO_2$ 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.

Keywords

Poly(ethylene terephthalate);Dispersibility;$TiO_2$;Chip;Fiber

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