Efeito da adição de TIO2 nas propriedades térmicas e na cristalinidade do copolímero de etileno/acetato de vinila

Química Nova

Ana Claudia S. Valentim¹  Maria Inês Bruno Tavares¹  Emerson Oliveira Da Silva¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Macromoléculas Professora Eloisa Mano Centro de TecnologiaRio de Janeiro RJ ,Brasil

关键词: nanocomposites;    titanium dioxide;    ethylene vinyl acetate copolymer;   

DOI  :  10.5935/0100-4042.20140044

来源: SciELO

【 摘 要 】

We investigated the effect of adding titanium dioxide nanoparticles (TiO2) to ethylene vinyl acetate (EVA) copolymer, containing 28% vinyl acetate groups, on the crystallinity and miscibility of the copolymer. Films of EVA/TiO2 containing 0.25%-1% TiO2, relative to the total weight of EVA, were prepared from their solution. The obtained films were characterized by X-ray diffraction, low-field nuclear magnetic resonance, and differential scanning calorimetry. The addition of TiO2 to the EVA copolymer was proved to cause changes in the crystallinity and mobility of the polymer chains of EVA, due to new intermolecular interactions and nanostructure organization.

【 授权许可】

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