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A 13C NMR study of mesomorphic solutions of poly(p-phenylene terephthalamide)

โœ Scribed by Close, L. G. ;Fornes, R. E. ;Gilbert, R. D.


Publisher
Wiley (John Wiley & Sons)
Year
1983
Tongue
English
Weight
490 KB
Volume
21
Category
Article
ISSN
0098-1273

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X-ray diffraction study of poly(p-phenyl
โœ M.G. Northolt ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 384 KB

On the basis of an X-ray diffraction study, a model is proposed for the crystal and molecular structure of poly(p-phenylene terephthalamide). The monoclinic (pseudo-orthorh6mbic) unit cell [a = 7.87 A, b = 5.18 A, c (fibre axis) = 12.9A and ), = 90 ] possesses Pn or P21/n space-group symmetry. Two m