Hierarchical Adsorption of Network-Forming Associative Polymers

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    Abstract

    In this paper, we discuss the hierarchical adsorption of micelles formed from network-forming, telechelic, associative polymers at an air-water interface. We propose an interfacial mechanism that involves three distinct steps: (i) adsorption of the micellar coronas at the interface, (ii) unfolding of the micelles to anchor the hydrophobic tails at the interface, and (iii) formation of a secondary adsorption layer by bridging between the primary layer and micelles in the bulk. While the first, transport-limited process is relatively fast, the latter processes are surprisingly slow; it may take up to 10(6) s for the adsorption to complete.
    Original languageEnglish
    Pages (from-to)6923-6928
    JournalLangmuir
    Volume25
    Issue number12
    DOIs
    Publication statusPublished - 2009

    Keywords

    • poly(ethylene oxide)
    • micelles
    • behavior
    • kinetics

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