Entropic and Enthalpic Effects in Thin Film Blends of Homopolymers and Bottlebrush Polymers

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dc.citation.firstpage1526en_US
dc.citation.issueNumber4en_US
dc.citation.journalTitleMacromoleculesen_US
dc.citation.lastpage1535en_US
dc.citation.volumeNumber52en_US
dc.contributor.authorMah, Adeline Huizhenen_US
dc.contributor.authorLaws, Travisen_US
dc.contributor.authorLi, Weien_US
dc.contributor.authorMei, Haoen_US
dc.contributor.authorBrown, Chance C.en_US
dc.contributor.authorIevlev, Antonen_US
dc.contributor.authorKumar, Rajeeven_US
dc.contributor.authorVerduzco, Rafaelen_US
dc.contributor.authorStein, Gila E.en_US
dc.date.accessioned2019-08-16T16:07:50Zen_US
dc.date.available2019-08-16T16:07:50Zen_US
dc.date.issued2019en_US
dc.description.abstractWe present a combined experimental and computational study of surface segregation in thin films of nearly athermal blends of linear and bottlebrush polymers. The lengths of bottlebrush backbone (Nb), bottlebrush side chain (Nsc), and linear polystyrene host (Nm) are systematically varied to examine the effects of polymer architecture on phase behavior. From the experiments, combinations of architectural parameters are identified that produce enrichment and depletion of bottlebrush at the polymer–air interface. These surface segregation behaviors are consistent with entropy-dominated thermodynamics. In addition, the experiments reveal conditions where bottlebrush and linear polymers are equally preferred at the surface. Simulations based on the self-consistent field theory (SCFT) qualitatively capture the three types of surface segregation behaviors and highlight the delicate interplay of entropic and enthalpic effects. Our investigations demonstrate that controlling both entropic and enthalpic driving forces is critical for the design of surface-active bottlebrush polymer additives.en_US
dc.identifier.citationMah, Adeline Huizhen, Laws, Travis, Li, Wei, et al.. "Entropic and Enthalpic Effects in Thin Film Blends of Homopolymers and Bottlebrush Polymers." <i>Macromolecules,</i> 52, no. 4 (2019) American Chemical Society: 1526-1535. https://doi.org/10.1021/acs.macromol.8b02242.en_US
dc.identifier.doihttps://doi.org/10.1021/acs.macromol.8b02242en_US
dc.identifier.urihttps://hdl.handle.net/1911/106260en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.en_US
dc.titleEntropic and Enthalpic Effects in Thin Film Blends of Homopolymers and Bottlebrush Polymersen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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