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The Role of Oxidation in the Migration Mechanism of Layered Silicate in Poly(propylene) Nanocomposites
Author(s) -
Zammarano Mauro,
Gilman Jeffrey W.,
Nyden Marc,
Pearce Eli M.,
Lewin Menachem
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600068
Subject(s) - montmorillonite , nanocomposite , silicate , isothermal process , materials science , fourier transform infrared spectroscopy , attenuated total reflection , infrared , chemical engineering , polymer chemistry , composite material , optics , thermodynamics , physics , engineering
Summary: Evidence of clay migration from the core to the surface of poly(propylene)/montmorillonite nanocomposites is provided. A three‐ to fivefold increase in the clay concentration of the surface is obtained during isothermal heating in oxidative atmosphere. The mechanism of migration is investigated by means of attenuated total reflectance Fourier transform infrared spectrometry. It is shown that oxygen plays a fundamental role in the migration mechanism.ρ Si versus c for the annealed samples.