Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Particle Dispersibility Improvement of Polyester Fibers with a New Line Injection

  • Park, Seong-Yoon (Department of Textile Engineering, Chonbuk National University) ;
  • Kim, Hak-Yong (Department of Textile Engineering, Chonbuk National University) ;
  • Jin, Fan-Long (School of Chemical and Materials Engineering, Jilin Institute of Chemical Technology) ;
  • Park, Soo-Jin (Department of Chemistry, Inha University)
  • Received : 2010.05.21
  • Accepted : 2010.06.12
  • Published : 2010.09.20
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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 $TiO_2$ particles within FD PET fibers was investigated. As a result, the dispersibility of $TiO_2$ particles in a PET matrix is found to depend on the particle size and its surface characteristics. Surface modification of $TiO_2$ by dimethyl polysiloxane resulted in the improved dispersibility and affinity of $TiO_2$ 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 $TiO_2$ 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.

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