Flow and thermal characteristics of cationic dyeable nylon 6/cationic dyeable poly(ethylene terephthalate) polyblended polymers and filaments

被引：0
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作者：
Shu, Yao-Chi [1 ]
Hsiao, Kai-Jen [2 ]
机构：
[1] Department of Polymer Materials, Vanung University, Chungli City, 320, Taiwan
[2] Fiber Technology Division, MCL/ITRI, Hsinchu, 300, Taiwan
来源：
Journal of Applied Polymer Science | 1600年 / 103卷 / 03期
关键词：
Cationic dyeable nylon 6 (CD-N6) and cationic dyeable poly(efhylene terephfhalate) (CD-PET) polymers were extruded (in the proportions of 75/25; 50/50; 25/75) from one melt twin-screw extruders to prepare three CD-N6/CD-PET polyblended polymers and then spin filaments. The molar ratio of 5-sodium sulfonate dimethyl isophthalate (5-SSDMI) for CD-N6 and CD-PET polymers were 2.01% and 2.04%; respectively. This study investigated the flow and thermal characteristics of CD-N6/CD-PET polyblended polymers and filaments using gel permeation chromatography (GPC); differential scanning calorimetry (DSC); thermogravimetric analysis (TGA); potentiometer; a rheometer; the density gradient; wide-angle X-ray diffraction (WAXD); and extension stress-strain measurement. Flow behavior of CD-N6/CD-PET polyblended polymers exhibited negative-deviation blends (NDB); and the 50/50 blend of CD-N6/CD-PET showed a minimum value of the meltviscosity. Experimental results of the DSC indicated CD-N6 and CD-PET molecules formed an immiscible system. Particularly; a double endothermic peak was observed from CD-N6; CD-PET and their polyblended filaments. The tenacity of CD-N6/CD-PET polyblended filaments decreased initially and then increased as the CD-PET content increased. Crystallinities and densities of CD-N6/CD-PET polyblended filaments were the linear relation with the blend ratio. The miscibility parameter μ values of CD-N6/ CD-PET all samples were less than zero. It indicated the electrostatic repulsion was evident between CD-N6 and CD-PET molecules. From the experimental data; the CD-N6 and CD-PET polymers were identified to be immiscible. © 2006 Wiley Periodicals; Inc;
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页码：2049 / 2056
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