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Performance of poly(ethylene‐ co ‐vinyl acetate) nanocomposites using distinct clays
Author(s) -
Pistor Vinicios,
Ornaghi Heitor Luiz,
Ferreira Carlos Arthur,
Zattera Ademir José
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34804
Subject(s) - nanocomposite , rheometry , materials science , ethylene vinyl acetate , montmorillonite , vinyl acetate , dynamic mechanical analysis , polymer , composite material , polymer chemistry , chemical engineering , copolymer , engineering
This study aimed to evaluate the performance of EVA nanocomposites with distinct clays. Three different types of nanoclays were used (Na + , 15A, and 30B) at a processing speed of 400 rpm. By DMA, an increase in the storage and loss moduli was found, as well as lower peak height and peak width at half‐height for the nanocomposites containing 15A clay. Also, in rheometry analysis, higher moduli values were obtained for the 15A clay nanocomposite. The relaxation and retardation spectra showed three distinct peaks for the nanocomposites containing the organophilic clays. Finally, the XRD and TEM analysis showed a microcomposite formation, intercalated and exfoliated structure for the Na + , 15A, and 30B nanocomposites, respectively. These results possibility a greater understanding of the interaction effects between the intercalated (15A) and exfoliated (30B) clays and the influence of the type of modifier in the nanocomposites studied. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012