• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2000.10a
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• pp.41-45
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• 2000

• Proceedings of the Korean Fiber Society Conference
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• 1997.10a
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• pp.158-161
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• 1997

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2005.05a
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• pp.158-163
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• 2005

• Fashion & Textile Research Journal
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• v.12 no.1
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• pp.94-102
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• 2010

The dyeing of poly(trimethylene terephthalate)(PTT)/silk mixture fabrics can be accomplished by a two bath dyeing method with separate application of the disperse dyes on the PTT, reduction cleaning of the stained silk and then dyeing the silk with the acid dyes, or by one bath dyeing method with mixed dye ranges, possibly followed by a cleaning treatment. The two bath dyeing method has the advantage of better results with respect to dry cleaning fastness properties thanks to the possibility of an intermediate reduction clear. On the other hand, as compared with the two bath dyeing method, one bath dyeing method with a mixed dye range permits rapid and more reproducible dyeing, without the risk of great difference with respect to the shade of the strike on both substrates as well as savings of time, energy and water usage. This study was carried out to investigate dyeing characteristics of PTT/silk mixture fabrics with disperse dyes/acid dyes by one bath dyeing method in comparison with two bath dyeing method in the interests for rationalization of the dyeing process.

• Fibers and Polymers
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• v.4 no.2
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• pp.84-88
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• 2003

The properties of a woven fabric made of poly(trimethylene terephthalate) (PTT) were investigated. The PTT fab-ric of draw textured yarn (DTY) showed excellent stretch as good as a fabric containing spandex. However, the unique stretch of the PTT fabric reduced dramatically by simple heat-treatment even at as low as $80^{\circ}C$. To understand the phenomenon, the crimp rigidity of the DTY was observed by SEM. It was found that the drastic reduction of stretch was caused by irreversible uncrimping of PTT DTY after heat-treatment. Conclusively, it is of importance to optimize the texturing conditions for PTT DTY to make the crimp more stable.

• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.335-336
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• 2003

The synthesis of poly(trimethylene terephthalate) (PTT), whose application is being expanded very rapidly to new apparel and carpet materials, was investigated by melt condensation polymerization using 1,3-propanediol (PDO) and terephthalic acid (TPA). No catalyst was used in the 1st step reaction (esterification), but tetrabutyl titanate(TBT) was used as a polyesterification catalyst ranging from 25 to 75 ppm based on the weight of TPA used in the 2nd step reaction (polyesterification). The molar ratio of PDO to TPA was set as 2.2:1. The effect of reaction conditions on the color and intrinsic viscosity of the final product was investigated. (omitted)

• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.64-67
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• 2003

Poly(trimethylene terephthalate)(이하 PTT)는 1941년 Caligo Printing Ink사의 Whinfield와 Dickson에 의해 중합 방법이 보고[1]된 이후 상업화를 위한 많은 학문적 연구가 이어져왔다. 그럼에도 불구하고 아직 PET에 비하여 기초 연구가 미비하며 상업적으로 사용하기에는 많은 불안정한 요소들을 가지고 있다. 앞선 연구자들이 밝힌바와 같이 PTT의 결정구조는 2개의 단량체가 1개의 unit cell을 이루면서 결정격자 내에서 O-C $H_2$-C $H_2$-C $H_2$-O가 trans-gauche-gauche-trans형의 coiled spring처럼 형성되어 좋은 elastic recovery와 뛰어난 신축성, 염색성 등 우수한 물성을 가지며 전반적인 성질은 PET와 Nylon의 중간성질을 뛰고 있지만 [2,3] 유리전이온도 (Tg : dir 4$0^{\circ}C$)와 냉결정화오도 ( $T_{ c cold}$ : dir 55$^{\circ}C$)사이의 차이가 15$^{\circ}C$ 정도이므로 섬유상에 많은 경시변화가 일으켜 구조적 불안정성을 가지게 한다 [4]. (중략)

• Proceedings of the Korean Fiber Society Conference
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• 2003.10a
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• pp.59-60
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• 2003

The undrawn monofilament of poly (trimethylene terephthalate) (PTT) was obtained by melt-spinning. After being annealed at 40 C it was analyzed by the measurements of DSC, DMA, WAXD and ATR FT-IR. Tg of PTT fiber after annealing for more than 96 hours was 20 C higher than that before annealing as determined by the DSC and DMA measurements. The WAXD analysis showed very weak diffraction peaks at 2$\theta$=17$^{\circ}$ and 2$\theta$=24$^{\circ}$ for the annealing time of more than 96 hours. The ATR FT-IR measurements made clear the conformational change of methylene chains of PTT glycol residue from random to gauche-gauche conformation.

• Proceedings of the Korean Fiber Society Conference
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• 2003.10a
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• pp.92-92
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• 2003

poly(trimethylene terephthalate) (PTT) was synthesized via condensation polymerization using different molar ratios of 1,3-propane diol (PDO)/terephthalic acid (TPA) in the presence of tetraisopropyl titanate (TiPT) as a polyesterifi-cation catalyst. The effect of reaction conditions on the characteristics of as-polymerized PTT was investigated.

• Textile Coloration and Finishing
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• v.13 no.4
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• pp.249-255
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• 2001

To interpret the dyeing behavior of PTT fiber with C. I. Disperse Violet 1, the thermodynamic Parameters of dyeing, such as standard affinity, heat of dyeing(enthalpy change), entropy change, diffusion coefficient, and activation energy of diffusion, were obtained from isotherms and dyeing rates at various temperatures and compared with those of PET fiber. The heat of dyeing(enthalpy change) and the entropy change of PTT fiber showed smaller negative values than those of PET fiber. This means that the dye molecules in the PTT fiber are combined more loosely than in the PET fiber and that is due to the flexibility of polymer chains of PTT fiber. The diffusion coefficients of C. I. Disperse Violet 1 into the PTT fiber were larger than those for PET fiber, and the activation energy of diffusion on PTT fiber was smaller than that on PET fiber.