较低摩尔质量且支化度小的窄摩尔质量分布级分具有较完善、分布更加均匀的薄片晶结构。
The fraction with smaller molecular weight, molecular weight distribution and lower content of short chain branching could form thinner and more uniform laminar crystals.
通过对原纤的热处理可以得到比较完善的片晶结构，而通过改变牵伸倍数与牵伸温度可以控制微孔的大小。
And by annealing, the protofibril may havecomplete lame1lar crystal. Then the pore size may becontrolled by changing the drawing ratio and drawingtemperature.
因此，硬弹性丙纶中的微孔是规整化片晶之外的又一重要的结构特征。
Thus, in addition to the regular arrangement lamellae, the voids are of a considerably main structure character.
用广角X射线衍射、小角X光散射等手段对硬弹性聚丙烯中排状堆积片晶的形成及结构进行了研究。
The formation and the structure of the unique piled lamellae rows in hard elastic polypropylene have been studied by WAXD and SAXS techniques.
结果表明，这种C轴垂直于膜面的片晶层积状形态结构与初始成膜浓度有关。
The results indicate that the C-axes of the lamellae are perpendicular to the films surfaces. The concentrations for prepared the films have great influence on the lamellae morphology.
结果表明，这种C轴垂直于膜面的片晶层积状形态结构与初始成膜浓度有关。
The results indicate that the C-axes of the lamellae are perpendicular to the films surfaces. The concentrations for prepared the films have great influence on the lamellae morphology.
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