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首页> 外文期刊>Journal of Applied Polymer Science >Interrelation between dyeing and thermal properties of PET fibers
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Interrelation between dyeing and thermal properties of PET fibers

机译：PET纤维的染色与热性能之间的相互关系

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The interrelation between dyeing and the thermal properties of micro and conventional poly(ethylene terephthalate) fibers is studied with conventional and modulated differential scanning calorimetry. X-ray diffraction, density, and birefringence studies are used to confirm the obtained results. It is shown that three studied anthraquinone dyes, in contrast to three studied benzodifuranone dyes, act as plasticizers for the fibers. A comparison between fibers and partially crystallized bulk samples is made. The specific fiber morphology makes the fibers more susceptible to plasticization than are bulk samples. This ability of a dye to lower the glass transition of the fibers will influence the dye diffusion and this information is needed to optimize the dyeing process for a specific dye-fiber combination. Further, the presence of an anthraquinone dye in the fiber alters the melting endotherm by changing the stability of the original crystals. The onset of the melting and recrystallization process is lowered. Although still well above the dyeing temperature, this lowering may be critical for the dimensional stability of the fabrics during any subsequent high-temperature process. A first investigation of the effect of variations in the thermal properties on the obtained color strength after dyeing is reported. (C) 2003 Wiley Periodicals, Inc. [References: 14]
机译：用常规和调制差示扫描量热法研究了微型和常规聚对苯二甲酸乙二醇酯纤维的染色与热性能之间的相互关系。 X射线衍射，密度和双折射研究用于确认获得的结果。结果表明，与三种研究的苯并二呋喃酮染料相比，三种研究的蒽醌染料可作为纤维的增塑剂。比较了纤维和部分结晶的块状样品。特定的纤维形态使纤维比散装样品更易于塑化。染料降低纤维的玻璃化转变的能力将影响染料的扩散，需要此信息来优化特定染料与纤维组合的染色过程。此外，纤维中蒽醌染料的存在通过改变原始晶体的稳定性来改变熔融吸热。熔化和重结晶过程的开始降低了。尽管仍远高于染色温度，但这种降低对于任何随后的高温过程中织物的尺寸稳定性可能至关重要。首次报道了热性能变化对染色后获得的色强度的影响。 （C）2003 Wiley Periodicals，Inc. [参考：14]

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