Polímeros: Ciência e Tecnologia
http://app.periodikos.com.br/journal/polimeros/article/doi/10.1590/0104-1428.2277
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Preparação e caracterização do compósito PVDF/Pani com partículas de níquel

Preparation and characterization the composite PVDF/Pani with nickel particles

Dias, Gabriel da Cruz; Paula, Fernando Rogério de; Malmonge, José Antonio; Malmonge, Luiz Francisco

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Resumo

Neste trabalho partículas de níquel foram incorporadas através da mistura física do pó resultante da mistura PVDF/Pani obtido por síntese química. Filmes homogêneos foram obtidos através da prensagem a temperatura de 180°C. A partir dos resultados pode-se notar alterações favoráveis e desfavoráveis nas propriedades do compósito após a incorporação e como estas tornam-se dependentes da incorporação. Os resultados de difratometria apresentaram picos característicos tanto da fase α da matriz polimérica e das partículas de níquel, e juntamente com as analises térmicas, que não há alteração na estrutura conformacional e a configuracional. Mesmo apresentando uma boa estabilidade térmica a incorporação indica que além da presença do polímero condutor como o aumento de partículas são prejudiciais às propriedades mecânicas finais da amostra. As micrografias apresentam as partículas de forma dispersas ao longo do filme e determinantes para os valores de condutividade elétrica e obtenção de uma fase magnética.

Palavras-chave

polianilina, poli(fluoreto de vinilideno), níquel, compósito, propriedades magnéticas.

Abstract

In this work nickel particles were incorporated by physically mixing of resulting powder blends of PVDF/Pani, obtained by chemical synthesis. Homogeneous films were obtained by hot pressing at 180 °C. From the results could be noted favorable and unfavorable changes in the properties of composites after incorporation and how this become dependent of the incorporation. The results of diffraction showed the characteristic peaks of both the α phase of the polymer matrix and the nickel particles, and with thermal analysis, no change in the conformational structure and configurational. Even with a good thermal stability incorporating, indicates that besides the presence of the conducting polymer as the increase of particles are harmful to the final mechanical properties of the sample. Micrographs showed particles dispersed throughout the film and determinants to electrical conductivity values and achieving a magnetic phase.

Keywords

polyaniline, poly (vinylidene fluoride), nickel, composite, magnetic property.

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