Diffuse polymer interfaces in lobed nanoemulsions preserved in aqueous media

Ginam Kim, Alioscka Sousa, Deborah Meyers, Marilyn Shope, Matthew Libera

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Using valence electron energy loss spectroscopy (EELS) in the cryo-scanning transmission electron microscopy (STEM), we found that the polymer-polymer interface in two-phase nanocolloids of polydimethyl siloxane (PDMS) and copolymer (methyl acrylate (MA)-methyl methacrylate (MMA)-vinyl acetate (VA)) preserved in water was diffuse despite the fact that equilibrium thermodynamics indicates it should only be on the order of a few nanometers. The diffuse interface is a result of the kinetic trapping of the copolymer within the PDMS phase, and this finding suggests new nonequilibrium pathways to control interfaces during the synthesis of multicomponent polymeric nanostructures.

Original languageEnglish
Pages (from-to)6570-6571
Number of pages2
JournalJournal of the American Chemical Society
Volume128
Issue number20
DOIs
StatePublished - 24 May 2006

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