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Morphology and chain mobility of reactive blend nanocomposites of PP‐EVA/Clay
Author(s) -
MataPadilla José M.,
MedellínRodríguez Francisco J.,
ÁvilaOrta Carlos A.,
RamírezVargas Eduardo,
CadenasPliego Gregorio,
ValeraZaragoza Mario,
VegaDíaz Sofía M.
Publication year - 2014
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.40897
Subject(s) - masterbatch , nanocomposite , materials science , polypropylene , montmorillonite , morphology (biology) , ethylene vinyl acetate , reactive extrusion , polymer blend , composite material , polymer chemistry , chemical engineering , copolymer , polymer , engineering , biology , genetics
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.