AbstractAn immiscible blend of isotactic polypropylene (PP) and ethylene-butene-1 copolymer (EB) (PP/EB = 70/30) containing a small amount of N,N'-dicyclohexyl-2,6-naphthalene dicarboxamide as a nucleating agent for β-form crystals was prepared by T-die extrusion. We successfully prepared an extruded sheet in which the orientation of the PP molecules is perpendicular to the deformation of the EB particles, i.e., the β-form crystals of PP are predominantly oriented perpendicular to the flow direction of the sheet plane (the transverse direction, TD), whereas the EB droplets are strongly deformed in the flow direction. It should be noted that EB barely affects the crystalline form and orientation of PP. This extraordinary structure provides unique mechanical anisotropy. The tear strength of the TD sample is significantly enhanced by the anomalous crack propagation in the machine direction (MD). Moreover, the anisotropy in tensile properties, such as the Young’s modulus, yield stress, strain at break, and dynamic tensile modulus, is reduced.An immiscible blend of isotactic polypropylene (PP) and ethylene-butene-1 copolymer (EB) containing a small amount of N,N'-dicyclohexyl-2,6-naphthalene dicarboxamide as a nucleating agent to generate β-form crystals was prepared by T-die extrusion. We successfully prepared an extruded sheet in which the orientation of the PP molecules is perpendicular to the deformation of the EB particles. It is suggested that EB barely affects the crystalline form and orientation of PP. Since this sheet containing a large amount of β-form crystals exhibits an extraordinary structure, unique mechanical anisotropy is obtained.

中文翻译：

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取向片中分散的橡胶和聚丙烯分子之间的垂直取向

摘要含有少量 N,N'-二环己基-2,6-萘二甲酰胺作为成核剂的全同立构聚丙烯 (PP) 和乙烯-丁烯-1 共聚物 (EB) (PP/EB = 70/30) 的不混溶共混物β 型晶体的制备方法是 T 型模头挤出。我们成功地制备了一种挤出片材，其中 PP 分子的取向垂直于 EB 颗粒的变形，即 PP 的 β 型晶体主要垂直于片材平面的流动方向（横向， TD)，而 EB 液滴在流动方向上发生强烈变形。应该指出的是，EB 几乎不影响 PP 的晶型和取向。这种非凡的结构提供了独特的机械各向异性。TD 样品的撕裂强度因机器方向 (MD) 上的异常裂纹扩展而显着增强。此外，拉伸性能的各向异性，例如杨氏模量、屈服应力、断裂应变和动态拉伸模量，都降低了。 全同立构聚丙烯 (PP) 和乙烯-丁烯-1 共聚物 (EB) 的不混溶共混物含有采用T-模挤出法制备了少量N,N'-二环己基-2,6-萘二甲酰胺作为成核剂生成β-型晶体。我们成功地制备了一种挤出片材，其中 PP 分子的取向垂直于 EB 颗粒的变形。这表明EB几乎不影响PP的晶型和取向。由于这个含有大量β型晶体的片层表现出非凡的结构，