样品倾斜的X-射线衍射法分析芳纶Ⅲ纤维径向结构

Radial Structure Analysis of Aramid Fiber (FANGLUN III) with STD

采用广角X-射线衍射样品倾斜扫描模式(STD)对新型对位芳香族共聚酰胺纤维——芳纶Ⅲ纤维进行了结晶和取向结构分析。发现在纤维径向存在明显的结晶度和取向度的渐变分布,在纤维内层越靠轴心的位置结晶度和取向度越大,在2θ=28.3°的结晶峰面积占总结晶面积的百分比越小,从而分析出纤维成形工艺对纤维聚集态结构带来的影响。

In this paper STD (Sample-tilting X-ray Diffractometry) is adopted in analysis of the radial orystalinity and orientation structure of aromatic copolyamide-fiber FANGLUN III. Gradual change distribution of crystalinity and orientation degree in the radial direction of the filament is found. The crystalinity and orientation degree of the core layer of the filament are bigger than that of the skin layer, and the ratio of the crystalinity peak area at 2?兹=28.3° dividing the total area is smaller. Thus the supermolecular structure can be correlated with by the manufacture process.