Effect of adding TiO2 to ethylene vinyl acetate copolymer on the latter's thermal properties and crystallinity

Química Nova

Valentim, Ana Claudia S.¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil¹  Silva, Emerson Oliveira da¹  Tavares, Maria Inês Bruno¹ 

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

DOI  :  10.5935/0100-4042.20140044

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

Unknown