Potentiality of mesoporous silica ordered as support for pvdf nano composites

Reference	Presenter	Authors (Institution)	Abstract
08-153	Edvanio Chagas	Chagas, E.(Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso do Sul); Soares, C.P.(Universidade Federal de Grande Dourados); Botero, E.R.(Universidade Federal de Grande Dourados); Andrade, R.C.(Federal University of BAHIA); Falcao, E.A.(Universidade Federal de Grande Dourados);	The nanostructured materials in the form of glass, film, nanoparticles, nanotubes and etc, present innumerable applications in the construction of technological devices. In this scenario we highlight the Mesoporous Sicilies Ordinary (OMS), whose main characteristic is to present high specific area and ordered pores with hexagonal arrangement of diameter 2 to 50 nm, if correctly sintered. They're used for diversity purposes, between an adsorption of pollutants. However, its major interest in the area of materials is the use of OMS in the synthesis of confined nanocomposites, such that some physical properties, mainly ferroelectric, are affected by the confinement. Work showed for ferroelectric particles of Triglycine Sulfate, temperature changes of structural phase transitions, structural damage, significant increase of mobility ions, occur when they are nanoconfined. An unexplored possibility is the synthesis of PVDF nanocomposites with OMS. Our results show that the synthesis mechanics occurred according to the literature, with good thermal stability and with the presence of SBA-15 phase properties, a vermicular-like particle morphology and string-like domains.The surface analysis showed specific characteristics of mesoporous materials (pore diameter of 5.93 nm) identified by the presence of the isotherm as a narrow hysteresis loop, evidencing the regularity of the pores. Because it is a multiphase polymer, the activation of the polar phase of PVDF by nanoconfining is a solution of interest if it presents a promising field of extramity for the analysis of ferroelectric characteristics in nanoconfinements of geometry. The analyzes of the ferroelectric phases of the films were done by quantifying the ratio of the ferroelectric phase to the non - ferroelectric phase, through FTIR, to the composite of the WHO / PVDF, depending on the temperature and the pressing time
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