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PBAT /hybrid nanofillers composites—Part 2: Morphological, thermal and rheological properties
Author(s) -
Calderaro Mayara Pollyane,
Pinheiro Ivanei Ferreira,
Holanda Saboya Souza Diego,
Clepf Pagotto Carolina,
Morales Ana Rita
Publication year - 2021
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.50414
Subject(s) - materials science , differential scanning calorimetry , nanocomposite , montmorillonite , dynamic mechanical analysis , composite material , rheology , sepiolite , thermal stability , exfoliation joint , scanning electron microscope , crystallization , chemical engineering , polymer , graphene , nanotechnology , chemistry , thermodynamics , raw material , physics , organic chemistry , engineering
This work is an investigation of the effect of different nanofillers: organically modified montmorillonite (MMT), sepiolite (SEP) and nano titanium dioxide (nTiO 2 ) and combination of them in poly(butylene adipate‐co‐terephthalate) (PBAT) films. Thermal morphological and rheological analyses were conducted to explain the behavior of this nanoparticles on O 2 and water vapor permeability coefficients, light transmission, and mechanical properties presented in previous study. Thermal stability of the nanocomposites was slightly decreased by the nanofillers presence. Differential scanning calorimetry and X‐ray analyses were carried out to investigate the crystallization behavior of nanocomposites. Transmission electron microscopic analysis showed regular and homogeneous dispersion of the nanoparticles, but scanning electron microscopy showed lack of adhesion in the sepiolite‐PBAT interface. Rheological measurements showed significant increase in both complex viscosity and storage modulus due to interactions between clays and PBAT and the effect of sepiolite and nTiO 2 on improving the exfoliation of montmorillonite as synergism between the nanofillers.