Artículo
Polypropylene nanocomposites produced by in‐situ grafting of maleic anhydride using different mixing procedures
Fecha de publicación:
10/04/2024
Editorial:
John Wiley & Sons
Revista:
Polymer Composites
ISSN:
0272-8397
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Nanocomposites (NC) of polypropylene (PP) and organophilic montmorillonite(oMt) are produced by reactive mixing with simultaneous grafting of maleicanhydride (MA) onto PP using organic peroxide as initiator. Five differentstrategies of incorporating reactants and clay into a laboratory mixer are used.The structure of composites is examined by FT-IR spectroscopy, x-ray diffractionand scanning electron microscopy. Rotational rheometry, thermogravimetry andoxygen permeability are used to evaluate properties. The preparation methodhas a remarkable influence on NC´s structure. Simultaneous addition of peroxideand MA to molten PP followed by incorporation of clay 20 minutes laterproduces the best degree of clay exfoliation/disaggregation. The NCs obtainedusing this procedure are highly transparent and have very thin tactoids withinterlayer spacing more than 50% larger than the original oMt. The incorporationof just 2 wt% of clay gives place to more than 30% reduction in PP oxygenpermeability. Additionally, the temperature at the maximum thermal degradationrate in nitrogen reduces in about 60C while the temperature at which thethermal degradation process begins is not affected.
Palabras clave:
NANOCOMPOSITES
,
POLYPROPYLENE
,
MONTMORILLONITE
,
REACTIVE MIXING
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Merchan Sandoval, Julie Pauline; Failla, Marcelo Daniel; Quinzani, Lidia Maria; Polypropylene nanocomposites produced by in‐situ grafting of maleic anhydride using different mixing procedures; John Wiley & Sons; Polymer Composites; 45; 5; 10-4-2024; 4636-4649
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