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Vibrational spectroscopic characterization of rigid rod polymers: IV. Crystalline modifications of poly(p-phenylene terephthalamide) (1983)

Shen, D. Y. ; Molis, S. E. ; Hsu, S. L.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 23 (1983), S. 543-547

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ISSN: 0032-3888

Keywords: Chemistry ; Chemical Engineering

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Infrared spectroscopy (4000-50 cm-1) was used to characterize the two crystalline modifications of poly(p-phenylene terephthalamide). Polarized studies revealed that hydrogen bonds are oriented primarily perpendicular to the film plane in both forms. We also found that the crystalline modification coagulated in water could be transformed into the other form by annealing at high temperatures.

Additional Material: 6 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pen.760231003

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