Clay mineral/polyamide nanocomposites obtained by in-situ polymerization or melt intercalation |
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| Affiliation: | 1. Institute of Macromolecular Chemistry, v.v.i, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic;2. Department of Polymers, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic;1. Servizio di Anestesia e Rianimazione 2 Città della Salute e della Scienza di Torino, Italy;2. GiViTI Coordinating Center, IRCCS-Istituto di Ricerche Farmacologiche “Mario Negri”, Centro di Ricerche Cliniche per le Malattie Rare Aldo e Cele Daccò, Ranica, Bergamo, Italy;1. Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland;2. Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland |
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| Abstract: | Series of so far undescribed clay mineral polyamide nanocomposites (CPN) were prepared by hydrolytic polymerizations of η-capryllactam (L8), ω-laurolactam (L12) and N-methyl-ω-laurolactam (ML12) initiated with 12-aminododecanoic acid (ADA) in the presence of a organomontmorillonite (OMt). Polymerization process was markedly accelerated due to a contribution of acidolytic and cationic polymerization on the intercalated ADA and its hydrochloride. Simple kinetics of polymerization with constant number of growth centers is valid up to a high polymer yield for all the lactams under study. For the sake of comparison, polyamide 6 nanocomposites were synthesized both by the method of the in-situ ε-caprolactam (L6) polymerization and by polyamide 6 melt blending. Structures of the CPN were analyzed by X-ray diffraction. |
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