Characterisation of montmorillonites simultaneously modified with an organic dye and an ammonium salt at different dye/salt ratios. Properties of these modified montmorillonites EVA nanocomposites
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http://hdl.handle.net/10045/46372
Títol: | Characterisation of montmorillonites simultaneously modified with an organic dye and an ammonium salt at different dye/salt ratios. Properties of these modified montmorillonites EVA nanocomposites |
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Autors: | Beltrán, Maribel | Benavente Domenech, Verónica | Marchante Rodríguez, Verónica | Dema, H. | Marcilla, Antonio |
Grups d'investigació o GITE: | Procesado y Pirólisis de Polímeros | Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN) |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos |
Paraules clau: | OMt EVA nanocomposites | CPN | Modified montmorillonite characterisation | Dye | Nanopigment |
Àrees de coneixement: | Ingeniería Química |
Data de publicació: | d’agost-2014 |
Editor: | Elsevier |
Citació bibliogràfica: | Applied Clay Science. 2014, 97-98: 43-52. doi:10.1016/j.clay.2014.06.001 |
Resum: | In this work, a sodium montmorillonite (Na+-Mt) was modified with two molecules simultaneously, an organic dye, methylene blue (MB), and ethyl hexadecyl dimethyl ammonium (EHDDMA). The synthesised organo-montmorillonites (OMt) combining different proportions of the two molecules were thoroughly characterised and mixed with ethylene vinyl acetate copolymer (EVA) in order to check the ability of these OMt as pigments and reinforcing additives. The synthesised OMt combining both surfactants, MB and EHDDMA, present higher interlayer distances than those with only MB, which were employed in previous works as nanopigments. When these OMt were incorporated in the EVA matrix, the obtained clay polymer nanocomposites (CPN) showed a high exfoliation degree of the OMt in the polymer, in such a way that at 80% of the cationic exchange capacity (CEC) of the Mt exchanged with EHDDMA, most of the OMt was exfoliated. Moreover, all the obtained CPN showed an increase in the Young's Moduli compared to the EVA reference, and especially those containing higher amounts of MB. The thermal stability of the CPN also increases with the MB content, compared to other CPN including conventional surfactants. The hiding power and colouring power achieved in the CPN are higher even with a much lower load of MB when EHDDMA is exchanged in the Mt. |
Patrocinadors: | The authors wish to thank the “Vicerrectorado de Investigación, Desarrollo e Innovación” of the University of Alicante for the research initiation grant (BII5414). |
URI: | http://hdl.handle.net/10045/46372 |
ISSN: | 0169-1317 (Print) | 1872-9053 (Online) |
DOI: | 10.1016/j.clay.2014.06.001 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2014 Elsevier B.V. |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.clay.2014.06.001 |
Apareix a la col·lecció: | INV - GTP3 - Artículos de Investigación sobre Procesado de Polímeros |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2014_Beltran_etal_ApplClayScience_final.pdf | Versión final (acceso restringido) | 2,36 MB | Adobe PDF | Obrir Sol·licitar una còpia |
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