Clay nanoplatelet induced morphological evolutions during polymeric foaming

Harikrishnan, G. ; Umasankar Patro, T. ; Raman Unni, A. ; Khakhar, Devang V. (2011) Clay nanoplatelet induced morphological evolutions during polymeric foaming Soft Matter, 7 (15). pp. 6801-6804. ISSN 1744-683X

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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2011...

Related URL: http://dx.doi.org/10.1039/C1SM05670K

Abstract

Remarkable evolutionary changes in cell morphology during reactive polymer nanocomposite foaming are observed by controlled foaming of suspensions of montmorillonite clay in the oligomeric polyurethane component. Delaminated nanoplatelets, when present as a networked cluster in suspensions, are shown to have very high efficiency in generating gas embryos for bubble nucleation. In the post-nucleation foaming period, clay nanoplatelets show an additional de-wetting behavior. The packing fraction of clay platelets in suspension and the consequent suspension rheology affect the final foam morphology.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:76871
Deposited On:07 Jan 2012 11:41
Last Modified:07 Jan 2012 11:41

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