Abstract

Poly(ethylene terephthalate)/clay nanocomposite multifilament yarn was manufactured by conventional masterbatch approach. Poly(butylene terephthalate) was used as a carrier polymer in masterbatch steps. The masterbatches were diluted into pilot melt spinning machine and subsequently drawn with 2.65 ratios to prepare fully oriented yarn. The degree of dispersion in nanocomposite fibers was analyzed by X-ray diffractometry and scanning electron microscopy. Even though the addition of nanoclay reduced mechanical properties of nanocomposite fibers, dimensional stability could be improved at certain clay contents. The flammability properties were sufficiently improved, and no significant changes were observed with increasing clay content. The main novelty of this paper is the development of a proper approach for the selection of optimum carrier polymer for nanoclay in masterbatch preparation, as well as proper nanoclay for desired polymers. The acid-base approach is used in evaluating the surface free energy of commercial nanoclay and calculation the total interaction energies between polymer and clay surfaces. Such an approach gives adequate information about polymer-clay compatibility and provides a useful tool in the selection of optimum carrier polymer, as well as proper nanoclay for the desired polymer during masterbatch preparations.

中文翻译：

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聚对苯二甲酸乙二醇酯-粘土纳米复合复丝纱线：物理和热学性质

摘要

聚对苯二甲酸乙二酯/粘土纳米复合复丝是通过传统的母料法制备的。在母料步骤中将聚对苯二甲酸丁二酯用作载体聚合物。将母料稀释到中熔纺丝机中，然后以2.65的比例拉伸以制备全取向的纱线。通过X射线衍射和扫描电子显微镜分析纳米复合纤维中的分散度。即使添加纳米粘土降低了纳米复合纤维的机械性能，在某些粘土含量下仍可以改善尺寸稳定性。可燃性得到了充分改善，并且随着粘土含量的增加，没有观察到明显的变化。本文的主要新颖之处在于开发了一种用于选择母料制备中纳米粘土的最佳载体聚合物的合适方法，以及用于所需聚合物的合适纳米粘土的方法。酸碱法用于评估商用纳米粘土的表面自由能，并计算聚合物与粘土表面之间的总相互作用能。这种方法可提供有关聚合物-粘土相容性的足够信息，并为选择最佳载体聚合物以及在母料制备过程中为所需聚合物提供合适的纳米粘土提供有用的工具。酸碱法用于评估商品纳米粘土的表面自由能，并计算聚合物与粘土表面之间的总相互作用能。这种方法可提供有关聚合物-粘土相容性的足够信息，并为选择最佳载体聚合物以及在母料制备过程中为所需聚合物提供合适的纳米粘土提供有用的工具。酸碱法用于评估商品纳米粘土的表面自由能，并计算聚合物与粘土表面之间的总相互作用能。这种方法可提供有关聚合物-粘土相容性的足够信息，并为选择最佳载体聚合物以及在母料制备过程中为所需聚合物提供合适的纳米粘土提供有用的工具。