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首页> 外文期刊>Journal of Applied Polymer Science >Flow and thermal characteristics of cationic dyeable nylon 6/cationic dyeable poly(ethylene terephthalate) polyblended polymers and filaments
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Flow and thermal characteristics of cationic dyeable nylon 6/cationic dyeable poly(ethylene terephthalate) polyblended polymers and filaments

机译：阳离子可染尼龙6 /阳离子可染聚对苯二甲酸乙二酯共混聚合物和长丝的流动和热特性

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摘要

Cationic dyeable nylon 6 (CD-N6) and cationic dyeable poly(ethylene terephthalate) (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 melt viscosity. 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 p values of CD-N6/CD-PET all samples were less than zero. It indicated the electrostatic repulsion was evident between CD-N6 and CDPET molecules. From the experimental data, the CD-N6 and CD-PET polymers were identified to be immiscible. (c) 2006 Wiley Periodicals, Inc.
机译：将阳离子可染尼龙6（CD-N6）和阳离子可染聚对苯二甲酸乙二酯（CD-PET）聚合物（比例为75 / 25、50 / 50、25 / 75）从一台熔融双螺杆挤出机挤出到准备三种CD-N6 / CD-PET多聚物，然后纺丝。 CD-N6和CD-PET聚合物的5-磺酸钠间苯二甲酸二甲酯（5-SSDMI）的摩尔比分别为2.01％和2.04％。这项研究使用凝胶渗透色谱（GPC），差示扫描量热法（DSC），热重分析（TGA），电位计，流变仪，密度梯度，差示扫描量热法研究了CD-N6 / CD-PET共混聚合物和长丝的流动和热特性。广角X射线衍射（WAXD）和拉伸应力应变测量。 CD-N6 / CD-PET共混聚合物的流动行为表现出负偏差共混物（NDB），CD-N6 / CD-PET的50/50共混物显示出熔体粘度的最小值。 DSC的实验结果表明CD-N6和CD-PET分子形成了不混溶的系统。尤其是，从CD-N6，CD-PET及其混合长丝中观察到了一个双重吸热峰。 CD-N6 / CD-PET共混长丝的强度先降低，然后随着CD-PET含量的增加而增加。 CD-N6 / CD-PET共混长丝的结晶度和密度与共混比呈线性关系。 CD-N6 / CD-PET所有样品的混溶性参数p值均小于零。这表明CD-N6和CDPET分子之间存在明显的静电排斥。根据实验数据，可以确定CD-N6和CD-PET聚合物是不混溶的。 （c）2006年Wiley Periodicals，Inc.

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