Thermally induced reorganization in LCP fibers

Thermally induced reorganization in LCP fibers

The molecular reorganization occurring in liquid crystalline polymer fiber during heat treatment is of great interest for many commercial reasons. Using thermal analysis techniques, WAXS and real time temperature dependent synchrotron SAXS, the structure and morphology of commercial LCP (liquid crys...

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Veröffentlicht in:Journal of thermal analysis and calorimetry 2008-07, Vol.93 (1), p.175-182
Hauptverfasser: Saw, C K, Collins, G, Menczel, J, Jaffe, M
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creator Saw, C K
Collins, G
Menczel, J
Jaffe, M
description The molecular reorganization occurring in liquid crystalline polymer fiber during heat treatment is of great interest for many commercial reasons. Using thermal analysis techniques, WAXS and real time temperature dependent synchrotron SAXS, the structure and morphology of commercial LCP (liquid crystalline polymer), Vectran(R), HBA/HNA (p-hydroxybenzoic acid/6-hydroxy-2-naphthoic acid), and its variant polymer fiber COTBP, HBA/HNA/BP/TA (BP-benzophenone, TA-terephthalic acid), have been examined. Both fibers have the typical liquid crystalline polymer structure, i.e., highly aligned with aperiodic sequencing along the fiber axis. There is a three-fold increase in strength in both fibers with heat treatment; however, the modulus is observed to increase significantly in COTBP but not in Vectran(R).
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title Thermally induced reorganization in LCP fibers
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