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dc.contributor.authorMangal, Rahul
dc.contributor.authorSrivastava, Samanvaya
dc.contributor.authorArcher, Lynden A.
dc.date.accessioned2016-02-21T08:51:07Z
dc.date.available2016-02-21T08:51:07Z
dc.date.issued2015-06-05
dc.identifier.citationMangal R, Srivastava S, Archer LA (2015) Phase stability and dynamics of entangled polymer–nanoparticle composites. Nat Comms 6: 7198. Available: http://dx.doi.org/10.1038/ncomms8198.
dc.identifier.issn2041-1723
dc.identifier.pmid26044723
dc.identifier.doi10.1038/ncomms8198
dc.identifier.urihttp://hdl.handle.net/10754/596809
dc.description.abstractNanoparticle-polymer composites, or polymer-nanoparticle composites (PNCs), exhibit unusual mechanical and dynamical features when the particle size approaches the random coil dimensions of the host polymer. Here, we harness favourable enthalpic interactions between particle-tethered and free, host polymer chains to create model PNCs, in which spherical nanoparticles are uniformly dispersed in high molecular weight entangled polymers. Investigation of the mechanical properties of these model PNCs reveals that the nanoparticles have profound effects on the host polymer motions on all timescales. On short timescales, nanoparticles slow-down local dynamics of the host polymer segments and lower the glass transition temperature. On intermediate timescales, where polymer chain motion is typically constrained by entanglements with surrounding molecules, nanoparticles provide additional constraints, which lead to an early onset of entangled polymer dynamics. Finally, on long timescales, nanoparticles produce an apparent speeding up of relaxation of their polymer host.
dc.description.sponsorshipThis work was supported by the National Science Foundation, Award No. DMR–1006323 and by Award No. KUS–C1018–02, made by the King Abdullah University of Science and Technology (KAUST). Use of the Advanced Photon Source, operated by the Argonne National Laboratory, was supported by the US DOE under Contract No. DE–AC02–06CH11357. We acknowledge Mr Xiaobing Zuo, Assistant Physicist, Argonne National Laboratory for helpful discussions.
dc.publisherSpringer Nature
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titlePhase stability and dynamics of entangled polymer-nanoparticle composites.
dc.typeArticle
dc.identifier.journalNature Communications
dc.identifier.pmcidPMC4468852
dc.contributor.institutionSchool of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA.
dc.contributor.institutionInstitute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA.
kaust.grant.numberKUS–C1018–02
refterms.dateFOA2018-06-13T12:07:47Z
dc.date.published-online2015-06-05
dc.date.published-print2015-12


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This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Except where otherwise noted, this item's license is described as This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit