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MALDI-TOF MS Study of Poly( p -phenylene Terephthalamide) Fibers

✍ Scribed by Gies, Anthony P.; Hercules, David M.; Ellison, Sparkle T.; Nonidez, William K.

Book ID
120271471
Publisher
American Chemical Society
Year
2006
Tongue
English
Weight
172 KB
Volume
39
Category
Article
ISSN
0024-9297

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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