Preparation and characterization of nematic polyazomethine/single‐walled carbon nanotube composites prepared by in situ polymerization |
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| Authors: | Esperanza Lafuente Milagros Piñol María Teresa Martínez Edgar Muñoz Luis Oriol José Luis Serrano |
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| Affiliation: | 1. Instituto de Carboquímica‐CSIC, Miguel Luesma Castán 4, 50018 Zaragoza, Spain;2. Facultad de Ciencias‐Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza‐CSIC, Pedro Cerbuna 12, 5009 Zaragoza, Spain;3. Instituto de Nanociencia de Aragón, Universidad de Zaragoza, Pedro Cerbuna 12, 5009 Zaragoza, Spain |
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| Abstract: | The synthesis and characterization of a series of nematic SWNT‐polyazomethine composites are described. The composites were prepared by in situ polymerization in the presence of 1 wt % of chemically modified SWNTs in such a way that they were either dispersed or covalently bonded to the polymeric matrix. The presence of the SWNTs did not alter the thermal behavior of the polymer matrix and, therefore, highly oriented fibers could be melt‐extruded from the composites at moderate temperatures, as revealed by structural and morphological studies. Preliminary tests on tensile properties indicate that strength and stiffness were improved when compared with fibers without CNTs, particularly when SWNTs were covalently bonded to the polymeric matrix. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 2361–2372, 2009 |
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| Keywords: | chemical functionalization fibers in situ polymerization liquid‐crystalline polymers (LCP) nanocomposites single‐walled carbon nanotubes thermal behavior |
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