A Rotating Specimen Mount for Use with X-Ray Spectrometer in Measuring Crystallite Orientation of Cellulosic and Other Textile Fibers

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Abstract
The quantitative evaluation of crystallite orientation in textile fibers by x‐ray methods is discussed. It is found that photographic recording and photometering of the resulting films can be replaced by automatic recording on a strip chart with the aid of an x‐ray spectrometer with Geiger‐Mueller counter. The design and details are given for a specimen holder capable of properly positioning and rotating a bundle of fibers in the x‐ray beam so that the 002 or other selected diffraction arc passes before the window of the counter. A tentative procedure is outlined for evaluating, with the aid of this apparatus, the crystallite orientation of a bundle of cellulose fibers. Some typical recordings of the intensity curves of the 002 arcs from ramie, cotton, and high tenacity rayon are presented.

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