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Polyamide-6/Organointercalated Lamellar Zirconium Phosphate Nanocomposites: Molecular Mobility, Crystallography and Thermo-Mechanical Evaluation

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Polyamide-6/Organointercalated zirconium phosphate nanocomposites (PA-6/ZrPOct) were prepared by melt extrusion. The synthesized lamellar ZrP was expanded with octadecylamine at different amine:phosphate ratio and its influence on thermal and thermo-mechanical, crystallographic and molecular mobility characteristics of the nanocomposites were evaluated by thermogravimetry (TG), differential scanning calorimetry (DSC), dynamic-mechanical analysis (DMA), wide-angle X-ray diffraction (WAXD) and proton low field nuclear magnetic resonance (1H LFNMR). It was observed a slight decrease for degradation temperatures T onset and T max for all nanocomposites. By DSC, PA-6 alpha-gamma phase transformation was detected. Also, PA-6 melting temperature and crystallinity degree were changed as function of the ratio amine:phosphate. Similar behavior was noticed for glass transition temperature (T g) and moduli (storage, E′, and loss, E″) in dynamic-mechanical evaluation. WAXD diffraction angles of ZrPOct shifted to lower values due to the effect of the amine:phosphate ratio. SEM image showed that filler structure with nanometer dimension was got. Several evidences deduced that nanocomposites with different degree of intercalation and/or exfoliation could have been achieved.
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Keywords: Nanocomposite; Octadecylamine; Organointercalated Zirconium Phosphate; PA-6

Document Type: Research Article

Affiliations: 1: Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Avenida Horacio Macedo, 2030 CT Bloco J, 21941-598, Ilha do Fundão, Rio de Janeiro, Brazil 2: Laboratório de Radioisótopos Eduardo Penna Franca-Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil

Publication date: May 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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