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Morphology, rheology, and mechanical properties of a new nanobiocomposite
Author(s) -
La Mantia Francesco P.,
Mistretta Maria Chiara,
Palermo Salvatore,
Ceraulo Manuela
Publication year - 2015
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.42128
Subject(s) - materials science , rheology , montmorillonite , biodegradable polymer , copolyester , composite material , polymer , small angle x ray scattering , elongation , nanometre , morphology (biology) , phase (matter) , dispersion (optics) , dynamic mechanical analysis , nanocomposite , polyester , ultimate tensile strength , scattering , chemistry , physics , genetics , organic chemistry , biology , optics
Nanobiocomposites are a new class of biodegradable polymer materials with an ultrafine phase dispersion of the order of a few nanometers in a biodegradable polymer matrix that shows very interesting properties often very different from those of conventional filled polymers. In this work the morphology and the rheological and mechanical properties of a new nanobiocomposite made of a biodegradable copolyester based blend with an organomodified montmorillonite have been investigated to evaluate its possible use in several applications. SAXS diffractograms and TEM micrographs show that the in both the adopted processing conditions an hybrid intercalated/exfoliated morphology is observed. Rheological behavior is significantly influenced by the presence of the filler and more important, depends on the type of the applied type of flow. As for the mechanical properties, the elastic modulus strongly increases, while the elongation at break remarkably decreases. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42128.