Using rheometry for determining nucleation density in colored system containing a nucleation agent

Z. Ma, R.J.A. Steenbakkers, J. Giboz, G.W.M. Peters

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)

Abstract

A new suspension-based rheological method was applied to study experimentally the crystallization of a nucleating agent (NA) filled isotactic polypropylene. This method allows for determination of point-nucleation densities where other methods fail. For example, optical microscopy can fail because nucleation densities become too high to count (nucleated materials) or crystallites are not well visible (colored materials) while DSC doesn’t work when the effect of flow needed to be studied. Both quiescent and mild-shear induced crystallizations were investigated. The results show that addition of nucleating agent increases nucleation density up to 6 decades for quiescent crystallization. The effect of shear on crystallization in the presence of NA was assessed and it is demonstrated that, at least for this system, the effectiveness of shear is much less then the effect of the nucleating agent.
Original languageEnglish
Pages (from-to)909-915
Number of pages7
JournalRheologica Acta
Volume50
Issue number11-12
DOIs
Publication statusPublished - 2011

Fingerprint Dive into the research topics of 'Using rheometry for determining nucleation density in colored system containing a nucleation agent'. Together they form a unique fingerprint.

Cite this