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- Title
Molecular structures and physical properties of heat-drawn conjugate fibers.
- Authors
Oh, Tae Hwan; Han, Sung Soo; Lyoo, Won Seok; Jeon, Han-Yong
- Abstract
As-spun poly(trimethylene terephthalate) (PTT)/poly(ethylene terephthalate) (PET) side-by-side conjugate fibers were drawn to investigate the effects of drawing conditions on structure development and physical properties. Effects of draw ratio and heat-set temperature were observed. In the state of an as-spun fiber, the molecular orientation of PTT was higher than PET, whereas PET molecular orientation increased remarkably over PTT with increasing draw ratio. Crimp contraction increased sharply at a draw ratio over 2.0, where the crystalline structure of the PET developed sufficiently. A heat-set temperature of at least 140°C was required to develop sufficient crimp contraction. The crystallinity and orientation of the PET were attributed mainly to the crimp contraction of the drawn fiber. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers
- Subjects
POLYETHYLENE terephthalate; PHTHALATE esters; THERMOPLASTICS; POLYESTERS; CONJUGATED polymers
- Publication
Polymer Engineering & Science, 2011, Vol 51, Issue 2, p232
- ISSN
0032-3888
- Publication type
Article
- DOI
10.1002/pen.21810