Stepwise swelling of a thin film of lamellae-forming poly(styrene-b- butadiene) in cyclohexane vapor

Handle URI:
http://hdl.handle.net/10754/562222
Title:
Stepwise swelling of a thin film of lamellae-forming poly(styrene-b- butadiene) in cyclohexane vapor
Authors:
Di, Zhenyu; Posselt, Dorthe; Smilgies, Detlef Matthias; Li, Ruipeng; Rauscher, Markus; Potemkin, Igor I.; Papadakis, Christine M.
Abstract:
We 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.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division
Publisher:
American Chemical Society
Journal:
Macromolecules
Issue Date:
26-Jun-2012
DOI:
10.1021/ma3004136
Type:
Article
ISSN:
00249297
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorDi, Zhenyuen
dc.contributor.authorPosselt, Dortheen
dc.contributor.authorSmilgies, Detlef Matthiasen
dc.contributor.authorLi, Ruipengen
dc.contributor.authorRauscher, Markusen
dc.contributor.authorPotemkin, Igor I.en
dc.contributor.authorPapadakis, Christine M.en
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 Societyen
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 Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalMacromoleculesen
dc.contributor.institutionPhysik Weicher Materie, Physikdepartment, Technische Universität München, James-Franck-Strasse 1, 85747 Garching, Germanyen
dc.contributor.institutionIMFUFA, Department of Science, Systems and Models, Roskilde University, P.O. Box 260, 4000 Roskilde, Denmarken
dc.contributor.institutionCornell High Energy Synchrotron Source (CHESS), Wilson Laboratory, Cornell University, Ithaca, NY 14853, United Statesen
dc.contributor.institutionUniversity of Science and Technology of China (USTC), Hefei, Anhui 230029, Chinaen
dc.contributor.institutionMax-Planck-Institute for Intelligent Systems, Heisenbergstrasse 3, D-70569 Stuttgart, Germanyen
dc.contributor.institutionInstitute of Theoretical and Applied Physics, Universität Stuttgart, Pfaffenwaldring 57/VI, D-70569 Stuttgart, Germanyen
dc.contributor.institutionPhysics Department, Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federationen
dc.contributor.institutionForschungszentrum Jülich GmbH, Jülich Centre of Neutron Science at FRM II, Lichtenbergstr. 1, 85747 Garching, Germanyen
kaust.authorLi, Ruipengen
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