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首页> 美国卫生研究院文献>Polymers >Effect of a Compatibilizer on the Morphology and Properties of Polypropylene/Polyethylentherephthalate Spun Fibers
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Effect of a Compatibilizer on the Morphology and Properties of Polypropylene/Polyethylentherephthalate Spun Fibers

机译：增容剂对聚丙烯/对苯二甲酸乙二酯短纤纤维形态和性能的影响

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摘要

Fibers spun by melt spinning of binary and ternary polypropylene/polyethylenetherephthalate blends have been produced and characterized in order to investigate the effect of a compatibilizer on their morphology and mechanical properties. The compatibilizer was a maleic anhydride-functionalized rubber copolymer. The effect of the compatibilizer was well evident in the isotropic state, as the morphology became very fine, the size of the dispersed particles was very small, and the adhesion was better. The effect of the compatibilizer on the mechanical properties is very relevant, especially in the elongation at break. On the contrary, no relevant effect was observed in the anisotropic oriented fibers. Although the average diameter of the microfibrils of the dispersed phase of the compatibilized blend generated during the hot drawing was much smaller than that of the microfibrils of the same particles of the uncompatibilized blend, the mechanical properties were almost the same. This behavior has been attributed to the length of the smaller microfibrils of the ternary blends, which was lower that of the microfibrils of the binary blend. This has been explained in terms of reduced initial droplet size, and therefore of lesser possibility of stretching the droplets to very long fibrils in these samples.
机译：为了研究相容剂对其形态和机械性能的影响，已经生产并表征了通过二元和三元聚丙烯/聚乙烯对苯二甲酸酯共混物的熔融纺丝纺制的纤维。相容剂是马来酸酐官能化的橡胶共聚物。在各向同性状态下，增容剂的效果非常明显，因为形态变得非常精细，分散颗粒的尺寸很小，粘附性也更好。增容剂对机械性能的影响非常重要，尤其是在断裂伸长率方面。相反，在各向异性取向的纤维中没有观察到相关的作用。尽管在热拉伸过程中产生的相容性共混物的分散相的微纤维的平均直径比未相容性共混物的相同颗粒的微纤维的平均直径小得多，但机械性能几乎相同。该行为归因于三元共混物的较小微纤维的长度，该长度小于二元共混物的微纤维的长度。这是通过减小初始液滴尺寸来解释的，因此在这些样品中将液滴拉伸成非常长的原纤维的可能性较小。

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