Premium
Analysis of the theoretical methods of calculations of ideal fiber birefringences
Author(s) -
Włochowicz Andrzej,
Janicki Jarosław,
Rabiej Stanisław
Publication year - 1985
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.1985.070300430
Subject(s) - birefringence , ideal (ethics) , intermolecular force , polymer science , materials science , polyamide , fiber , polymer chemistry , thermodynamics , molecule , physics , chemistry , composite material , optics , organic chemistry , philosophy , epistemology
Based on the equation carried out previously, theoretical birefringence has been calculated for selected synthetic fibers, taking into account intermolecular interactions. The calculation has been carried out using bond polarizabilities given by Denbigh [ Trans. Faraday Soc. , 36 , 936 (1940)] and Pietralla [ J. Polym. Sci., Polym. Phys. Ed. , 18 , 1117 (1984); 20 , 1193 (1982)]. Large discrepancies of Δ n id for polyamides between theoretical and experimental values have been found. The necessity for elaborating a new method of birefringence calculations has been pointed out.