A texture correction for quantitative X-ray powder diffraction analysis of cellulose

Autor:	T. Paakkari, M. Järvinen, M. Blomberg, R. Serimaa
Rok vydání:	1988
Předmět:	Diffraction Crystallinity Reflection (mathematics) Materials science Optics business.industry Texture (crystalline) business Spinning General Biochemistry Genetics and Molecular Biology Order of magnitude Powder diffraction Monoclinic crystal system
Zdroj:	Journal of Applied Crystallography. 21:393-397
ISSN:	0021-8898
Popis:	A practical method to correct X-ray powder diffraction patterns for the effects of preferred orientation in the case of monoclinic crystals is presented. The method is based on the use of symmetrized harmonics to describe the preferred orientation. To obtain a texture-free result the diffraction pattern must be measured both in symmetrical transmission and in symmetrical reflection modes using a spinning sample. The method is tested by measuring pole figures for a cellulose powder sample. The analysis of the results shows that by averaging the measured intensities properly the effect of texture can be diminished by one order of magnitude. This accuracy is sufficient for applying the method, for example, in quantitative determination of crystallinity of cellulose.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::88be12ee857845fc755cd52c686cd2e2 https://doi.org/10.1107/s0021889888003371 Zobrazit plný text záznamu Plný text