Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor

Zhenyu Di, Dorthe Posselt, Detlef-M. Smilgies, Ruipeng Li, Markus Rauscher, Igor I. Potemkin, Christine Papadakis

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

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.
OriginalsprogEngelsk
TidsskriftMacromolecules
Vol/bind45
Udgave nummer12
Sider (fra-til)5185-5195
ISSN0024-9297
DOI
StatusUdgivet - 2012

Citer dette

Di, Z., Posselt, D., Smilgies, D-M., Li, R., Rauscher, M., Potemkin, I. I., & Papadakis, C. (2012). Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor. Macromolecules, 45(12), 5185-5195. https://doi.org/10.1021/ma3004136
Di, Zhenyu ; Posselt, Dorthe ; Smilgies, Detlef-M. ; Li, Ruipeng ; Rauscher, Markus ; Potemkin, Igor I. ; Papadakis, Christine . / Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor. I: Macromolecules. 2012 ; Bind 45, Nr. 12. s. 5185-5195.
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title = "Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor",
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.",
author = "Zhenyu Di and Dorthe Posselt and Detlef-M. Smilgies and Ruipeng Li and Markus Rauscher and Potemkin, {Igor I.} and Christine Papadakis",
year = "2012",
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volume = "45",
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journal = "Macromolecules",
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Di, Z, Posselt, D, Smilgies, D-M, Li, R, Rauscher, M, Potemkin, II & Papadakis, C 2012, 'Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor' Macromolecules, bind 45, nr. 12, s. 5185-5195. https://doi.org/10.1021/ma3004136

Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor. / Di, Zhenyu; Posselt, Dorthe; Smilgies, Detlef-M.; Li, Ruipeng; Rauscher, Markus ; Potemkin, Igor I.; Papadakis, Christine .

I: Macromolecules, Bind 45, Nr. 12, 2012, s. 5185-5195.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Stepwise Swelling of a Thin Film of Lamellae-Forming Poly(styrene-b-butadiene) in Cyclohexane Vapor

AU - Di, Zhenyu

AU - Posselt, Dorthe

AU - Smilgies, Detlef-M.

AU - Li, Ruipeng

AU - Rauscher, Markus

AU - Potemkin, Igor I.

AU - Papadakis, Christine

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

U2 - 10.1021/ma3004136

DO - 10.1021/ma3004136

M3 - Journal article

VL - 45

SP - 5185

EP - 5195

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 12

ER -