Effect of Molecular Architecture on Conformational Relaxation of Polymer Chains at Interfaces

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    Abstract

    Dynamics of polymer chains near an interface with an inorganic material are believed to strongly affect the physical properties of polymers in nanocomposites and thin films. An effect of molecular architecture on the conformational relaxation behavior of polystyrene (PS) chains at the quartz interface using sum-frequency generation spectroscopy is reported here. The relaxation dynamics of chains in direct contact with the quartz interface is slower with a star-shaped architecture than that with its linear counterpart. The extent of the delay becomes more pronounced with increasing number of arms. This can be explained in terms of the superior interfacial activity to the quartz surface for the star-shaped PS.

    Original languageEnglish
    Article number2000096
    JournalMacromolecular rapid communications
    Volume41
    Issue number21
    DOIs
    Publication statusPublished - Nov 1 2020

    All Science Journal Classification (ASJC) codes

    • Organic Chemistry
    • Polymers and Plastics
    • Materials Chemistry

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