폴리에스테르 섬유의 구조와 염색성(II) -열처리한 고속방사 폴리에스테르 섬유의 미세구조와 염색성-

Studies on the Structure and Dyeing Properties of Polyester Fiber(II) - Structure and Dyeing Properties of Annealed High Speed Spun PET Fiber -

Polyethylene terephthalate (PET) fibers spun at the take-up velocity of 5,800 m/min was annealed at various temperature, and the changes of structure and dyeing properties of the fiber on annealing were studied. Crystallinity increased and orientation decreased significantly with an increase in annealing temperature over 180 $^{\circ}C$. Dyeing properties of the fibers were measured from the dye adsorption curves and analyzed with the dyeing transition temperature ( $T_{d}$), dyeing rate constant (k), and dye-uptake. Dyeing transition temperature showed a maximum and dye-uptake showed a minimum around 180 $^{\circ}C$ for the annealed HOY. The dependency of $T_{d}$ and k on annelealing temperature was well related with the change of amorphous state represented by $X_{v/}$ $V_{c9}$, where $X_{v}$ is volume fraction crystallinity and $V_{c}$ is mean crystal volume. The change of dye-uptake was explained with the change in amorphous volume caused by annealing.aling.aling.