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Determination of fiber orientation of cellulosic samples by x‐ray diffraction
Author(s) -
Prud'homme Robert E.,
Hien N. V.,
Noah Joseph,
Marchessault Robert H.
Publication year - 1975
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1975.070190922
Subject(s) - materials science , fiber , orientation (vector space) , diffraction , composite material , distribution function , polymer , fiber diffraction , composite number , plane (geometry) , optics , x ray crystallography , mathematics , geometry , physics , thermodynamics
A method has been developed which permits the quantitative determination of fiber orientation in a cellulosic sample (paper, nonwoven or composite). From the measured fibril angle distribution function and the observed variation in intensity of the (002) plane of the x‐ray pattern, a parameter governing the fiber distribution function is obtained analytically. The method is demonstrated for two different paper samples showing a narrow and a large fiber orientation distribution. The method is rapid for a series of samples involving the same fibers and does not involve any operator interpretation. It gives directly the average fiber orientation function from the bulk of the sample, not just from its surface as microscopic methods do. It can be particularly useful in the analysis of paper–polymer laminates.