Determination of graft density of substrate-supported polymer films

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DOIResolve DOI: http://doi.org/10.1016/j.physb.2006.05.295
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TypeArticle
Journal titlePhysica B Condensed Matter
Volume385-386
Issue1
Pages697699; # of pages: 3
SubjectGraft density; polyethylene oxide; chemisorbed PEO; end-tethered polymer
AbstractDetermining the graft density of polymers adsorbed on a substrate from neutron scattering-length density profile can be challenging. A scheme based on integrating a select region of the profile is proposed and applied to results obtained from a recent neutron reflectometry experiment that investigated the physical properties of polyethylene oxide (PEO) chemisorbed onto a gold-coated Si substrate. Reflectivity measurements were performed with the PEO exposed to a H₂O/D₂O mixture contrast matched to the underlying gold. The graft density obtained by the integration technique is 60% higher than the value determined using scaling relations.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedYes
NRC number103
NPARC number12333642
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Record identifier81cff361-07ac-44f6-a14d-143ed7da2509
Record created2009-09-10
Record modified2016-05-09
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