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dc.contributor.authorDi, Zhenyu*
dc.contributor.authorPosselt, Dorthe*
dc.contributor.authorSmilgies, Detlef Matthias*
dc.contributor.authorLi, Ruipeng*
dc.contributor.authorRauscher, Markus*
dc.contributor.authorPotemkin, Igor I.*
dc.contributor.authorPapadakis, Christine M.*
dc.date.accessioned2015-08-03T09:56:57Zen
dc.date.available2015-08-03T09:56:57Zen
dc.date.issued2012-06-26en
dc.identifier.issn00249297en
dc.identifier.doi10.1021/ma3004136en
dc.identifier.urihttp://hdl.handle.net/10754/562222en
dc.description.abstractWe investigated the swelling of a thin film of lamellae-forming poly(styrene-b-butadiene) in cyclohexane vapor. The vapor pressure and thus the degree of swelling of the film are increased in a stepwise manner using a custom-built sample cell. The resulting structural changes during and after each step were followed in situ using time-resolved grazing-incidence small-angle X-ray scattering (GISAXS). During the first step, the lamellar thickness increases strongly, before it decreases again. At the same time, the full width at half-maximum (FWHM) of the diffuse Bragg reflection along the film normal has a sharp maximum. These observations point to the formation of new lamellae. During the subsequent swelling steps, the lamellar thickness overshoots only weakly. The behavior thus resembles qualitatively our previous results on a similar thin film during swelling in saturated vapor of cyclohexane; however, it deviates from earlier theoretical predictions. We propose a theory that is quantitatively correct for the description of the dependence of the lamellar thickness on the polymer volume fraction in the late stage of the swelling steps. © 2012 American Chemical Society.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleStepwise swelling of a thin film of lamellae-forming poly(styrene-b- butadiene) in cyclohexane vaporen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Program*
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division*
dc.identifier.journalMacromoleculesen
dc.contributor.institutionPhysik Weicher Materie, Physikdepartment, Technische Universität München, James-Franck-Strasse 1, 85747 Garching, Germany*
dc.contributor.institutionIMFUFA, Department of Science, Systems and Models, Roskilde University, P.O. Box 260, 4000 Roskilde, Denmark*
dc.contributor.institutionCornell High Energy Synchrotron Source (CHESS), Wilson Laboratory, Cornell University, Ithaca, NY 14853, United States*
dc.contributor.institutionUniversity of Science and Technology of China (USTC), Hefei, Anhui 230029, China*
dc.contributor.institutionMax-Planck-Institute for Intelligent Systems, Heisenbergstrasse 3, D-70569 Stuttgart, Germany*
dc.contributor.institutionInstitute of Theoretical and Applied Physics, Universität Stuttgart, Pfaffenwaldring 57/VI, D-70569 Stuttgart, Germany*
dc.contributor.institutionPhysics Department, Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation*
dc.contributor.institutionForschungszentrum Jülich GmbH, Jülich Centre of Neutron Science at FRM II, Lichtenbergstr. 1, 85747 Garching, Germany*
kaust.personLi, Ruipeng*


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