## Abstract A highly biaxially oriented isotactic polypropylene was obtained by stretching and rolling repeatedly. In such treatment, it was confirmed by xβray examination that the 010 spacing was oriented parallel to the plane of rolling.
Orientation of aqueous stretched cottons as measured by X-ray diffraction
β Scribed by A. Sharada Devi; V. Subramaniam
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 288 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0021-8995
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β¦ Synopsis
The structural changes produced by aqueous swelling and stretching in cotton is found to be irreversible. This article presents the X-ray angle data of six varieties of cotton that belong to Gossypium hirsutum. A marked decrease in X-ray angles was found in all treated samples, thereby indicating better orientation. Improvement in the orientation is associated with increase in the stretch. The improvement is high in all tension-dried cottons, showing the impact of the tension drying. Similar improved orientation is found in all varieties, indicating the varietal response of G. hirsutum cottons.
π SIMILAR VOLUMES
The orientation of the noncrystalline (amorphous) phase in poly (ethylene terephthalate) fibers is analyzed by separating the amorphous scattering in the wideangle x-ray diffraction patterns into isotropic and anisotropic components. Two parameters are used to characterize the amorphous orientation-