Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity

Großkopf S, Fouquet P, Wiehemeier L, Hellweg T (2021)
Molecular Physics: e1893400.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
In this study, we investigate the influence of the block copolymer architecture on the bending elasticity of polymer-rich lamellar phases. In detail, we study the polymer-rich system water/o-xylene/Pluronic triblock copolymer/C8TAB and change the polymer while keeping the mass ratios constant. We use neutron spin echo measurements (NSE) to determine κ. With the measurements we determine the relaxation rate Γqz,ZG of the bilayer bending mode and subsequently calculate the bilayer bending modulus κ using the Zilman-Granek approach [Zilman et al., Phys. Rev. Lett. 77, 4788–4791 (1996)]. Moreover, we have investigated the lamellar phases via small-angle X-ray scattering (SAXS) and have analysed the data with the modified Caillé theory to obtain the Caillé parameter η. Based on κ the bulk compression modulus B can be calculated. Increasing values of κ are found with increasing EO and PO block size in the range of 3.8 to 13.4 kBT. The computed values of B are in the range of 103 to 105 Pa.
Erscheinungsjahr
2021
Zeitschriftentitel
Molecular Physics
Art.-Nr.
e1893400
ISSN
0026-8976
eISSN
1362-3028
Page URI
https://pub.uni-bielefeld.de/record/2953085

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Großkopf S, Fouquet P, Wiehemeier L, Hellweg T. Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity. Molecular Physics. 2021: e1893400.
Großkopf, S., Fouquet, P., Wiehemeier, L., & Hellweg, T. (2021). Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity. Molecular Physics, e1893400. https://doi.org/10.1080/00268976.2021.1893400
Großkopf, S., Fouquet, P., Wiehemeier, L., and Hellweg, T. (2021). Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity. Molecular Physics:e1893400.
Großkopf, S., et al., 2021. Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity. Molecular Physics, : e1893400.
S. Großkopf, et al., “Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity”, Molecular Physics, 2021, : e1893400.
Großkopf, S., Fouquet, P., Wiehemeier, L., Hellweg, T.: Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity. Molecular Physics. : e1893400 (2021).
Großkopf, Sören, Fouquet, Peter, Wiehemeier, Lars, and Hellweg, Thomas. “Pluronic-based lamellar phases: influence of polymer architecture on bilayer bending elasticity”. Molecular Physics (2021): e1893400.

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