Effect of Local Chain Conformation in Adsorbed Nanolayers on Confined Polymer Molecular Mobility

Biao Zuo, Hao Zhou, Mary J.B. Davis, Xinping Wang, Rodney D. Priestley

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Interfaces play an important role in modifying the dynamics of polymers confined to the nanoscale. We demonstrate that the distance over which an interface suppresses molecular mobility in poly(styrene) thin films can be systematically increased by tens of nanometers by controlling the chain of conformation, i.e., the height of the loops in irreversibly adsorbed nanolayers. These effects arise from topological interaction between adsorbed and neighboring unadsorbed chains, respectively, which increase their motional coupling to facilitate the propagation of suppressed dynamics originating at the interface, thus highlighting the ability to manipulate interfacial effects by local conformation of chains in adsorbed nanolayers.

Original languageEnglish (US)
Article number217801
JournalPhysical review letters
Volume122
Issue number21
DOIs
StatePublished - May 29 2019

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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