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"Micro-structure-macro-response" relationship in swollen block copolymer films

Title data

Gensel, Julia ; Liedel, Clemens ; Schoberth, Heiko G. ; Tsarkova, Larisa:
"Micro-structure-macro-response" relationship in swollen block copolymer films.
In: Soft Matter. Vol. 5 (2009) Issue 13 . - pp. 2534-2537.
ISSN 1744-683X
DOI: https://doi.org/10.1039/B907332A

Official URL: Volltext

Abstract in another language

We demonstrate the effect of confinement on the thickness-dependent swelling behavior of poly(styrene)-b-poly(2-vinylpyridine) diblock copolymer films as revealed by in situspectroscopic ellipsometry. "Microscopic" molecular confinement to the dimension smaller than the characteristic lamella spacing, as well as to the non-equilibrium microstructures limits the solvent up-take by the polymer film. The maximum degree of swelling ("macroscopic response") is achieved for films with a starting thickness in a dry state hdr in the range of [similar]one-two characteristic lamella dimension in bulk L0 and drops down according to [similar]hdr-0.1 as the film thickness increases up to [similar][small mu ]m scale ([similar]tens of L0). These findings bring novel fundamental insights into the stimuli-responsive behavior of confined soft matter.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Research Institutions > Collaborative Research Centers, Research Unit > SFB 481 Komplexe Makromolekül- und Hybridsysteme in inneren und äußeren Feldern
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Research Institutions
Research Institutions > Collaborative Research Centers, Research Unit
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 14 Mar 2016 07:56
Last Modified: 14 Mar 2016 07:56
URI: https://eref.uni-bayreuth.de/id/eprint/31707