Proceedings of the Korean Fiber Society Conference (한국섬유공학회:학술대회논문집)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Annealing Effect on Structure of Poly(trimethylene terephthalate) Undrawn Fibers

  • Murase, Shigemitsu (Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology) ;
  • Ohtaki, Manabu (Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology)
  • Published : 2003.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords