Fabrication of microcellular PP-MMT nanocomposite foams in a sub-critical C[O.sub.2] process

The present paper is dedicated to fabrication of microcellular PP-MMT nanocomposite foams blown by C[O.sub.2] at 3-7 MPa pressure range. XRD and TEM studies showed that MMT particles were well exfoliated upon PP-MMT nanocomposite processing, however presence of the nanoclay particles did not facilit...

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Bibliographic Details
Published in:Cellular polymers 2012-05, Vol.31 (3), p.125
Main Authors: Dolomanova, Viktoriya, Kumar, Vipin, Pyrz, Ryszard, Madaleno, Liliana A.O, Jensen, Lars R, Rauhe, Jens Ch. M
Format: Article
Language:English
Subjects:
Carbon dioxide
Chemical processes
Chemical properties
Composition
Foam
Identification and classification
Montmorillonite
Polypropylene
Production processes
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Summary:The present paper is dedicated to fabrication of microcellular PP-MMT nanocomposite foams blown by C[O.sub.2] at 3-7 MPa pressure range. XRD and TEM studies showed that MMT particles were well exfoliated upon PP-MMT nanocomposite processing, however presence of the nanoclay particles did not facilitate the foaming process, resulting in non-uniform cell structure and low expansion ratios. SEM images demonstrate that clay nanoparticles have not improved the foam morphology; and no nucleation effect of the clay was observed in the produced foams. These data were supported by DSC studies.
ISSN:0262-4893