Interfacial elasticity and coalescence suppression in compatibilized polymer blends

Ellen Van Hemelrijck, Peter Van Puyvelde, Sachin Velankar, Chris Macosko, Paula Moldenaers

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

The coalescence behavior of a 10/90 polydimethylsiloxane/polyisoprene blend was investigated using dynamic measurements in the linear viscoelastic region. It was found that blends with less than 1% of block copolymer displayed two relaxation mechanisms. A reduction in the shear rate caused a shift of the high frequency relaxation towards lower frequencies, which suggested the occurrence of coalescence. The blends with a concentration of block copolymers above 1% showed coalescence suppression.

Original languageEnglish (US)
Pages (from-to)143-158
Number of pages16
JournalJournal of Rheology
Volume48
Issue number1
DOIs
StatePublished - Jan 2004

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