Influence of the Surfactant Nature on the Occurrence of Self-Assembly between Rubber Particles and Thermally Reduced Graphite Oxide during the Preparation of Natural Rubber Nanocomposites
Author
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Aguilar Bolados, Héctor
Author
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Yazdani-Pedram Zobeiri, Mehrdad
Author
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Brasero, Justo
Author
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López Manchado, Miguel
Admission date
dc.date.accessioned
2015-12-15T13:58:22Z
Available date
dc.date.available
2015-12-15T13:58:22Z
Publication date
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2015
Cita de ítem
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Journal of Nanomaterials
Volume 2015, Article ID 212493, 7 pages
en_US
Identifier
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DOI: 10.1155/2015/212493
Identifier
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https://repositorio.uchile.cl/handle/2250/135730
General note
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Artículo de publicación ISI.
en_US
Abstract
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The natural rubber (NR) latex consists of polymer particles charged negatively due to the adsorbed phospholipids and proteins molecules. The addition of stable aqueous suspension of thermally reduced graphite oxide (TRGO) stabilized by ionic surfactants to NR latex can favor the occurrence of interaction between the stabilized TRGO and NR particles. Herein, the use of two surfactants of different nature, namely, sodium dodecyl sulfate (SDS) and dodecyltrimethylammonium bromide (DTAB), for the preparation of (TRGO)/NR nanocomposites, is reported. Zeta potential and particle size measurements indicated that the use of DTAB as cationic surfactant results in the flocculation of NR particles and promoted the formation of ion-pair interactions between TRGO and the proteins and/or phospholipids present on the NR surface. This indicates that the use of DTAB can promote a self-assembly phenomenon between TRGO with adsorbed DTAB molecules and NR particles. The occurrence of self-assembly phenomenon allows obtaining homogenous dispersion of TRGO particles in the polymer matrix. The TRGO/NR nanocomposites prepared by the use of DTAB exhibited superior mechanical properties and excellent electrical conductivities reaching values of stress at 500% strain of 3.02 MPa and 10(-4) S/cm, respectively.
en_US
Patrocinador
dc.description.sponsorship
National Commission for the Scientific and Technological Research (CONICYT)
FONDECYT 1131139
Spanish Ministry of Science and Innovation (MICINN), Spain
2013-48107-C3-2-R
Influence of the Surfactant Nature on the Occurrence of Self-Assembly between Rubber Particles and Thermally Reduced Graphite Oxide during the Preparation of Natural Rubber Nanocomposites