Morphological, optical, and barrier properties of PP/MMT nanocomposites

In this work, nanocomposites of polypropylene (PP) and organically modified montmorillonite (MMT) were evaluated concerning optical, mechanical, and barrier properties. The nanocomposites were prepared by melt compounding using a twin-screw extruder. The PP/MMT films were evaluated by measurements o...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2013-08, Vol.70 (8), p.2181-2191
Main Authors: Zehetmeyer, G., Scheibel, J. M., Soares, R. M. D., Weibel, D. E., Oviedo, M. A. S., Oliveira, R. V. B.
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Exact sciences and technology
Food industries
Forms of application and semi-finished materials
Free radicals
Fundamental and applied biological sciences. Psychology
General aspects
Handling, storage, packaging, transport
Impact strength
Injection molding
Light
Montmorillonite
Nanocomposites
Optical properties
Organic Chemistry
Original Paper
Oxidation
Permeability
Photocatalysis
Photodegradation
Physical Chemistry
Polymer industry, paints, wood
Polymer Sciences
Polymers
Soft and Granular Matter
Technology of polymers
Twin screw extruders
Ultraviolet radiation
Water vapor
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Summary:In this work, nanocomposites of polypropylene (PP) and organically modified montmorillonite (MMT) were evaluated concerning optical, mechanical, and barrier properties. The nanocomposites were prepared by melt compounding using a twin-screw extruder. The PP/MMT films were evaluated by measurements of oxygen and water vapor permeability, and to verify its efficiency as a barrier to ultraviolet radiation (by UV–Vis spectroscopy). MMT has demonstrated a high ability to improve the gas barrier properties of the PP. Furthermore, MMT showed optical efficiency acting as a UV absorber, and presented higher absorptions at wavelengths between 215 and 254 nm. These results suggest that these nanocomposite materials have great potential for applications such as films with superior properties for food packing.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-013-0929-9