Morphology and chain mobility of reactive blend nanocomposites of PP-EVA/Clay

ABSTRACT Polypropylene (PP)‐ethylene vinyl acetate (EVA)/clay nanocomposites were prepared via reactive blending using dicumyl peroxide (DCP) as an initiator with the goal of enhancing the interaction between both phases and modified nanoclay. The effect of the reactive blending and clay incorporati...

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Bibliographic Details
Published in:Journal of applied polymer science 2014-10, Vol.131 (20), p.np-n/a
Main Authors: Mata-Padilla, José M., Medellín-Rodríguez, Francisco J., Ávila-Orta, Carlos A., Ramírez-Vargas, Eduardo, Cadenas-Pliego, Gregorio, Valera-Zaragoza, Mario, Vega-Díaz, Sofía M.
Format: Article
Language:English
Subjects:
Applied sciences
Chain mobility
clay
Clay (material)
Composites
crosslinking
Droplets
elastomers
Ethylene vinyl acetates
Exact sciences and technology
Forms of application and semi-finished materials
Materials science
Morphology
Nanocomposites
Nanostructure
nanostructured polymers
Polymer industry, paints, wood
Polymers
polyolefins
Strategy
Technology of polymers
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Summary:ABSTRACT Polypropylene (PP)‐ethylene vinyl acetate (EVA)/clay nanocomposites were prepared via reactive blending using dicumyl peroxide (DCP) as an initiator with the goal of enhancing the interaction between both phases and modified nanoclay. The effect of the reactive blending and clay incorporation strategies (direct and masterbatch) on the blend and nanostructure morphology, and chain mobility of nanocomposites were studied. The chemical analysis showed the chemical bonding of PP‐EVA, which helped to enhance the interaction in the nanocomposites. The nanocomposites obtained from the direct clay strategy presented a co‐continuous morphology of bordering intercalated and agglomerated nanoclay sheets, while the nanocomposites obtained from the masterbatch strategy showed that blend morphology change from droplet to co‐continuous with the increase of EVA concentration, with intercalated/exfoliated nanoclay sheets located in the EVA domains and at the interface. The dynamic mechanical and creep‐recovery results showed different behavior for the both strategies in terms of chain mobility and relaxation. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40897.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.40897