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Multiscale polymer dynamics in hierarchical carbon nanotube grafted glass fiber reinforced composites

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dc.contributor.coauthorKrishnamurthz, Ajay
dc.contributor.coauthorTao, Ran
dc.contributor.coauthorDoshi, Sagar M.
dc.contributor.coauthorBurni, Faraz Ahmed
dc.contributor.coauthorNatarajan, Bharath
dc.contributor.coauthorHunston, Donald
dc.contributor.coauthorThostenson, Erik T.
dc.contributor.coauthorFaraone, Antonio
dc.contributor.coauthorForster, Amanda L.
dc.contributor.coauthorForster, Aaron M.
dc.contributor.departmentDepartment of Chemical and Biological Engineering
dc.contributor.kuauthorŞenses, Erkan
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.date.accessioned2024-11-09T23:48:09Z
dc.date.issued2019
dc.description.abstractCarbon nanotube (CNT) grafted glass fiber reinforced epoxy nanocomposites (GFRP) present a range of stiffnesses (MPa to GPa) and length scales (mu m to nm) at the fiber-matrix interface. The contribution of functionalized CNT networks to the local and bulk polymer dynamics is studied here by using a combination of torsion dynamical mechanical thermal analysis (DMTA), positron annihilation lifetime spectroscopy (PALS), and neutron scattering (NS) measurements. DMTA measurements highlight a reduction in the storage modulus (G') in the rubbery region and an asymmetric broadening of the loss modulus (G '') peak in the alpha-transition region. NS measurements show a suppressed hydrogen mean-square displacement (MSD) in the presence of glass fibers but a higher hydrogen MSD after grafting functionalized CNTs onto fiber surfaces. PALS measurements show greater free volume characteristics in the presence of the functionalized CNT modified composites, supporting the view that these interface layers increase polymer mobility. While NS and DMTA are sensitive to different modes of chain dynamics, the localization of functionalized nanotubes at the fiber interface is found to affect the distribution of polymer relaxation modes without significantly altering the thermally activated relaxation processes.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.indexedbyPubMed
dc.description.issue7
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipU.S. Department of Commerce, National Institute of Standards and Technology [70NANB15H272]
dc.description.sponsorshipNational Institute of Standards and Technology [70NANB151-1112, DMR-1508249, SB1341-12-CQ-0011, 70NANB18H027]
dc.description.sponsorshipNational Science Foundation [DMR-1508249]
dc.description.sponsorshipU.S. National Science Foundation [1254540]
dc.description.sponsorshipAir Force Office of Scientific Research [F1ATA00236G002] The authors acknowledge Dr. Jonathan Seppala for his timely assistance with the dynamical mechanical testing. Research performed in part at the NIST Center for Nanoscale Science and Technology NanoFab. A.K. acknowledges financial assistance from the U.S. Department of Commerce, National Institute of Standards and Technology (Award 70NANB15H272). R.T. acknowledges the National Institute of Standards and Technology for funding (Award 70NANB151-1112). Access to NGB-30m SANS and HFBS was provided by the Center for High Resolution Neutron Scattering, a partnership between the National Institute of Standards and Technology and the National Science Foundation under Agreement DMR-1508249 for financial assistance of E.S., E.T.T., and S.M.D. acknowledge financial assistance by the U.S. National Science Foundation (Grant 1254540). B.N. acknowledges the support of the Air Force Office of Scientific Research (Award F1ATA00236G002). D.H. acknowledges support from National Institute of Standards and Technology for funding (Award SB1341-12-CQ-0011). F.A.B. acknowledges funding from the National Institute of Standards and Technology for funding (Award 70NANB18H027). A.M.F, A.L.F., and A.F. were supported through congressional appropriations to the National Institute of Standards and Technology.
dc.description.volume1
dc.identifier.doi10.1021/acsapm.9b00464
dc.identifier.issn2637-6105
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85087128504
dc.identifier.urihttps://doi.org/10.1021/acsapm.9b00464
dc.identifier.urihttps://hdl.handle.net/20.500.14288/14245
dc.identifier.wos476967100031
dc.keywordsCarbon nanotube composites
dc.keywordsPolymer nanocomposites
dc.keywordsFiber reinforced polymer nanocomposites
dc.keywordsPolymer dynamics
dc.keywordsViscoelastic properties
dc.keywordsNeutron scattering
dc.keywordsHierarchical composites
dc.keywordsPositron annihilation lifetime spectroscopy
dc.language.isoeng
dc.publisherAmerican Chemical Society (ACS)
dc.relation.ispartofACS Applied Polymer Materials
dc.subjectMaterials sciences
dc.subjectMultidisciplinary design optimization
dc.subjectPolymers
dc.titleMultiscale polymer dynamics in hierarchical carbon nanotube grafted glass fiber reinforced composites
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorŞenses, Erkan
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Chemical and Biological Engineering
relation.isOrgUnitOfPublicationc747a256-6e0c-4969-b1bf-3b9f2f674289
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relation.isParentOrgUnitOfPublication8e756b23-2d4a-4ce8-b1b3-62c794a8c164
relation.isParentOrgUnitOfPublication.latestForDiscovery8e756b23-2d4a-4ce8-b1b3-62c794a8c164

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