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Morphological Structure of Poly(trimethylene terephthalate) Fibers Annealed by Passing on the Plate Heater  

Hong, Seong-Hag (Korea Textile Development Institute)
Kim, Ryong (Korea Textile Development Institute)
Choi, Chang-Nam (Department of Textile Engineering, Chonnam National University)
Choi, Hee (Department of Clothing and Textiles, Chonnam National University)
Lee, Woong-Eui (Department of Fashion Design.Coordination, Kwangju Women's University)
Cho, Sung-Yong (Department of Environmental Eng., Chonnam National University)
Publication Information
Polymer(Korea) / v.27, no.2, 2003 , pp. 106-112 More about this Journal
Abstract
Poly(trimethylene terephthalate)(PTT) fibers were treated by passing on the plate heater to study the annealing effect on the change of morphological structure and physical properties. In the X-ray diffraction curves of PTT annealed, a sharp peak at 2$\theta$=15.6$^{\circ}$ appeared and the peak intensity became stronger with the increase of annealing temperature and time. This peak was based on the (010) plane of PTT crystals. The crystallinity determined by density measurement was also increased by annealing. With the increases of temperature and time, the dynamic viscoelastic behaviors were shown to be a large reduction in T(tan $\delta$$_{max}$). The birefringence and $T_g$ were also reduced, but the melting temperature was the same. These results mean that the molecular chains in armorphous region are transfered into the crystalline legion, making the remained chains relaxed during annealing at tensionless state.
Keywords
poly(trimethylene terephthalate); plate heater annealing; crystallinity; morphological structure; physical properties;
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