Open AccessEffect of adding TiO2to ethylene vinyl acetate copolymer on the latter's thermal properties and crystallinity.
Author(s) -
Ana Claudia S. Valentim,
Maria Inês Bruno Tavares,
Emerson Oliveira da Silva
Publication year - 2014
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.5935/0100-4042.20140044
Subject(s) - crystallinity , copolymer , ethylene vinyl acetate , ethylene , vinyl acetate , materials science , thermal , chemical engineering , polymer chemistry , polymer , organic chemistry , chemistry , composite material , catalysis , thermodynamics , physics , engineering
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