• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2001.04a
• /
• pp.40-44
• /
• 2001

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2001.11a
• /
• pp.15-19
• /
• 2001

• Proceedings of the Korean Fiber Society Conference
• /
• 2001.04b
• /
• pp.123-126
• /
• 2001

• Proceedings of the Korean Fiber Society Conference
• /
• 2000.04a
• /
• pp.93-96
• /
• 2000

• Textile Coloration and Finishing
• /
• v.15 no.2
• /
• pp.59-67
• /
• 2003

PTT[poly(trimethylene terephthalate)] fiber was annealed by passing on the plate heater to illuminate the effects of annealing on the mechanical properties and dyeability with varying the treatment temperature for 0.5 second. The apparent crystal sizes and crystallinity were increased with increases in temperature. With the increases of the temperature, the dynamic viscoelastic behaviors were analyzed to be reduction in $T_{max} (tan{\delta})$. The initial modulus were observed to be a small enhanced. The shrinkage in hot water were reduced. The dyeability for disperse dye enhanced dramatically, for example, a satisfactory degree of exhaustion was obtained by dyeing at $95^\circ{C}$ for 30 min with the PTT fibers heat treated at $180^\circ{C}$.

• Polymer(Korea)
• /
• v.27 no.5
• /
• pp.477-483
• /
• 2003

The structure development of drawn poly(trimethylene terephthalate) PTT as a function of draw down ratio and drawing temperature was studied. The special effort was made to find out the effect of structural development on thermal properties and crystallinity in drawn PTT. The changes in shrinkage ratio and mechanical properties were understood base on the level of crystallinity and orientation of the drawn PTT. The stress induced crystallization caused the increase in glass transition temperature and the decrease in cold crystallization temperature and enthalpy. The crystallinity and orientation were dependent upon the level of applied stress level as well as chain flexibility at high drawing temperature. The drawing resulted in the increase of shrinkage ratio but it was minimized by increasing of crystallinity. The development of orientation resulted in increasing modulus and tensile strength while decreasing elongation at break.

• Clean Technology
• /
• v.13 no.4
• /
• pp.244-250
• /
• 2007

Sorption of C. I. Disperse Yellow 54 dye in poly(trimethylene terephthalate) (PTT) and poly (ethylene terephthalate) (PET) textile fibers were measured at various pressures, temperatures, and times in the presence of supercritical carbon dioxide and thereby the diffusivities of the dye in the fibers were calculated. The diffusivity of dye in the polymeric fibers was very low, only in the order of $10^{-12}\;cm^2/sec$, but increased with increasing temperature at constant pressure and with increasing pressure at constant temperature. The diffusivity in PTT fibers were about 1.5 to 3 times as large as that in PET fibers. As the fiber was very thin, the dye distribution in the fiber was almost uniform everywhere inside the fiber.

• Proceedings of the Korean Fiber Society Conference
• /
• 2003.04a
• /
• pp.337-338
• /
• 2003

PTT(poly trimethylene terephthalate)섬유는 PET(polyethylene terephthalate)섬유에 비하여 탄성 (elasticity)가 우수하고 염색성이 PET와 유사한 점에서 차세대섬유로 분류되고 있다. 분자의 구조가 trans-trans의 fully extended chain(rod shape)형태인 PET에 비하여 trans-gauche-gauche-trans의 스프링과 같은 extended zigzag(helix shape)이어서 탄성회복성이 우수하다. 또한 PTT의 탄성계수값은 PET에 비하여 $\frac{1}{2}$정도이다. 의복을 착용중 신장과 수축을 반복하는 과정에서 섬유는 탄성을 점차 상실하게 되는데, 이 응력완화의 변화특성에 따라서 착용감이 영향을 끼친다. (중략)

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2000.10a
• /
• pp.46-52
• /
• 2000

• Proceedings of the Korean Fiber Society Conference
• /
• 2001.04b
• /
• pp.51-54
• /
• 2001