The influence of surfactant loading level in a montmorillonite on the thermal, mechanical and rheological properties of EVA nanocomposites


Autoria(s): Beltrán, M.I.; Benavente Domenech, Verónica; Marchante Rodríguez, Verónica; Marcilla, Antonio
Contribuinte(s)

Universidad de Alicante. Departamento de Ingeniería Química

Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos

Procesado y Pirólisis de Polímeros

Data(s)

17/09/2014

17/09/2014

01/10/2013

Resumo

In this work, montmorillonite (Mt) has been organically modified with ethyl hexadecyl dimethyl ammonium (EHDDMA) in 20, 50, 80 and 100% of the nominal exchange capacity (CEC) of the Mt. A full characterization of the organo-montmorillonite (OMt) obtained has been made, including thermal analysis, X-Ray Diffraction, elemental analysis CHN and nitrogen adsorption. According to the results, 12% in mass of the surfactant added is strongly retained by the Mt. When the mass percentage of EHDDMA exchanged in the OMt is increased up to this level, the interactions OMt–EHDDMA are steeply reduced depending on the EHDDMA content. Clay polymer nanocomposites (CPN) were prepared by melt mixing of EVA and different loads of OMt. The CPN were compress molded to obtain 1 mm thick sheets, which have been characterized according to their mechanical, thermal and rheological behaviors. The major changes in the structure of the OMt are obtained for low contents of EHDDMA. Nevertheless, the CPN containing OMt exchanged at 20 and 50% of the CEC show relatively low effect of the EHDDMA while the mechanical response and rheological behavior of CPN with OMt modified at 80 and 100% of the CEC are much more pronounced.

Verónica Benavente would like to thank the Vicerrectorado de Investigación, Desarrollo e Innovación of the University of Alicante for the research initiation grant (BII5414) that she has received.

Identificador

Applied Clay Science. 2013, 83-84: 153-161. doi:10.1016/j.clay.2013.08.028

0169-1317 (Print)

1872-9053 (Online)

http://hdl.handle.net/10045/40345

10.1016/j.clay.2013.08.028

Idioma(s)

eng

Publicador

Elsevier

Relação

http://dx.doi.org/10.1016/j.clay.2013.08.028

Direitos

info:eu-repo/semantics/restrictedAccess

Palavras-Chave #Modified montmorillonite #Ethyl hexadecyl dimethyl ammonium bromide #Clay polymer nanocomposites #EVA #Ingeniería Química
Tipo

info:eu-repo/semantics/article