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Commercial carboxuylated NBR polymers properties modified by the insertion of sintetic nanoparticles

Grant number: 12/05013-0
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): May 01, 2012
Effective date (End): February 28, 2014
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Emerson Rodrigues de Camargo
Grantee:Renata Lang Sala
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil


This Project was elaborated to be developed in 24 months by Renata Lang Sala, regular student of the Master Course in the Programa de Pós-graduação em Química (PPGQ) of UFSCar, with degree in Chemistry obtained at UFSCar-Universidade Federal de São Carlos in 2011. The main topic of this Project is the synthesis, the development and the characterization of new nanocomposite materials obtained from the insertion of synthetic nanoparticles into commercial carboxylated rubber (XNBR) by means of a colloidal route. Considering the necessity of a strict control of the reproducibility, silica nanoparticles with sharp size distribution will be prepared by the Stober method. The surface of nanoparticles will be modified with silane molecules and also by a polymeric layer synthesized in situ aiming to improve the interface polymer-nanoparticle. It is expected that nanoparticles with different surface will be self-organized in function of the interface property obtained using different capping strategies, and that these different organization will modify the final properties, resulting in new nanocomposite materials with better chemical and mechanical characteristics. Nanoparticles will be characterized by scanning and transmission electron microcopies and the thermo-mechanical behavior will be used to calculate the thermal stability and the vitreous transition temperature of the new nanocomposite materials, which will be characterized by infrared and Raman spectroscopy. Finally, it will be fundamental to characterize the materials by nuclear magnetic resonance using different nucleus (13C, 1H in liquid , 29Si, 13C and 15N in solid state).

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SALA, RENATA L.; OLIVEIRA XAVIER, TATIELIH P.; VENANCIO, TIAGO; ARANTES, TATIANE MORAES; PARANHOS, CAIO M.; CAMARGO, EMERSON R.. Dynamic and structural correlations in nanocomposites of silica with modified surface and carboxylated nitrile rubber. Journal of Colloid and Interface Science, v. 466, p. 247-253, . (12/07067-0, 13/07296-2, 12/05013-0)

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