首页> 外文会议>2001 Polymers, laminations coatings conference >THE EFFECTS OF MOLECULAR STRUCTURE, RHEOLOGY, MORPHOLOGY AND ORIENTATIONON POLYETHYLENE BLOWN FILM PROPERTIES
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THE EFFECTS OF MOLECULAR STRUCTURE, RHEOLOGY, MORPHOLOGY AND ORIENTATIONON POLYETHYLENE BLOWN FILM PROPERTIES

机译:分子结构,流变学,形态学和取向对聚乙烯吹塑薄膜性能的影响

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The effects and interactions of polyethylene molecular structure, rheology, morphology and molecular orientation onblown film properties were examined in detail. The molecular structure was examined via gel permeationchromatography (GPC), rheology via standard dynamic oscillatory shear tests, morphology via transmission electronmicroscopy (TEM) and molecular orientation via both wide angle x-ray scattering (WAXS) and infrared dichroism.Resins of both medium and high molecular weight were examined. The results clearly showed that the resin rheologyand molecular structure profoundly affected the extent of lamellar stacking, fibril nuclei and degree of molecularorientation which in turn resulted in substantial changes in blown film properties. Lastly, it was demonstrated thatthese various characterization methods complement each other very well to provide useful insight into the complexprocessing-structure-property (P-S-P) interactions in polyethylene blown films.
机译:聚乙烯分子结构,流变学,形态学和分子取向对聚乙烯的影响和相互作用 详细检查了吹塑薄膜的性能。通过凝胶渗透检查分子结构 色谱法(GPC),通过标准动态振荡剪切测试的流变学,通过透射电子的形态学 显微镜(TEM)和分子定向通过广角X射线散射(WAXS)和红外二向色性进行。 检查了中分子量和高分子量的树脂。结果清楚地表明,树脂的流变性 和分子结构深刻地影响了层状堆积的程度,原纤维核和分子的程度 取向反过来导致吹膜性质的显着变化。最后,证明 这些不同的表征方法可以很好地相互补充,以提供对复合物的有用见解 聚乙烯吹塑薄膜中的加工结构性质(P-S-P)相互作用。

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