Next Article in Journal
Controlling the Morphologies of Silver Aggregates by Laser-Induced Synthesis for Optimal SERS Detection
Previous Article in Journal
Editorial for the Special Issue “Characterization of Nanomaterials: Selected Papers from 6th Dresden Nanoanalysis Symposium”
Open AccessArticle

Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites

1
Instituto Politécnico Nacional-ESIQIE, Laboratorio de Investigación en Materiales Porosos, Catálisis Ambiental y Química Fina, UPALM, Edificio 7 P. B., Zacatenco, C. P., Ciudad de México 07738, Mexico
2
Instituto Politécnico Nacional-ESIQIE, Laboratorio de Investigación en Polímeros y Nanomateriales, UPALM, Edificio Z-5, P. B., Zacatenco, Gustavo A. Madero, C. P., Ciudad de México 07738, Mexico
3
Instituto Politécnico Nacional, Centro de Nanociencias Micro y Nanotecnologías, C.P., México D.F. 07300, Mexico
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(11), 1528; https://doi.org/10.3390/nano9111528
Received: 1 October 2019 / Revised: 21 October 2019 / Accepted: 24 October 2019 / Published: 27 October 2019
A series of samples of Mg/Zn/Al LDHs (layered double hydroxides) materials was prepared by the co-precipitation and urea hydrolysis methods. They were modified with organic surfactants (acrylate and oleate anions) and characterized by X-ray diffraction, which corroborated the intercalation of anionic species into the interlayer space. The hydrophobized materials were incorporated at low contents (10 and 15 wt.%) to polystyrene, which was synthesized by emulsion polymerization techniques. The polymeric composites were analyzed by thermogravimetry to determine the decomposition temperature. The results demonstrated that the materials with Zn presented the greatest increment in the degradation temperature (7 °C < T < 54 °C). Moreover, the Friedman, Flynn–Wall–Ozawa, and Coats–Redfern models were compared to obtain the kinetic parameters of degradation process. The obtained order of decomposition of the Coats–Redfern model showed that the decomposition process occurs in at least two stages. Finally, the addition of environmentally friendly modified Layered Double Hydroxides (LDH) nanomaterials to the polystyrene (PS) matrix allowed for obtaining polymeric composites with higher thermal stability, retarding the decomposition process of PS. View Full-Text
Keywords: polystyrene; layered double hydroxides; hydrophobization; nanocomposites; degradation temperature; decomposition kinetic polystyrene; layered double hydroxides; hydrophobization; nanocomposites; degradation temperature; decomposition kinetic
Show Figures

Graphical abstract

MDPI and ACS Style

De la Rosa-Guzmán, M.Á.; Guzmán-Vargas, A.; Cayetano-Castro, N.; Del Río, J.M.; Corea, M.; Martínez-Ortiz, M.J. Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites. Nanomaterials 2019, 9, 1528.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop