Small Particle X‐Ray Scattering by Fibers. II. Radial Distribution of Microcrystallites
Small Particle X‐Ray Scattering by Fibers. II. Radial Distribution of Microcrystallites
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纤维的小颗粒 X 射线散射 II。
DOI：
10.1063/1.1722163
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发表时间：
1955
期刊：
影响因子：
--
通讯作者：
A. Heyn
中科院分区：
文献类型：
--
作者：
A. Heyn
微晶颗粒在纤维中的径向分布函数由x射线在小角度上的散射得到。粒子分布函数是通过对x射线数据的傅里叶合成方法，在粒子间干涉起作用的条件下对散射强度进行反演得到的。在相同的条件下，不同的纤维得到了不同的分布曲线。同一纤维在不同膨胀条件下的分布曲线，与膨胀度越高，颗粒分离越宽一致。因此，对不同膨胀程度的散射强度之间的差异给出了定量解释。结晶度是根据得到的分布曲线，结合前面论文中确定的粒度来计算的。
Radial distribution functions of the microcrystalline particles in fibers are derived from the x‐ray scattering at small angles. Particle distribution functions are obtained by application of the method of Fourier synthesis to the x‐ray data, by inversion of the intensity scattered under conditions where interparticle interference plays a part.Different distribution curves are obtained with different fibers, investigated under the same conditions.The distribution curves obtained with the same fiber investigated under different conditions of swelling, are consistent with the wider separation of the particles at higher degrees of swelling. A quantitative explanation is thus given of the differences between the scattered intensities at different degrees of swelling.The degree of crystallinity is calculated from the distribution curves, so obtained, in combination with the particle sizes determined in preceding papers.