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@ARTICLE{Gutmann:391859,
author = {Gutmann, Jochen S. and Müller-Buschbaum, Peter and Stamm,
Manfred},
title = {{C}omplex pattern formation by phase separation of polymer
blends in thin films},
journal = {Faraday discussions},
volume = {112},
issn = {1364-5498},
address = {Cambridge [u.a.]},
publisher = {Soc.},
reportid = {PUBDB-2017-10510},
pages = {285 - 297},
year = {1999},
note = {F-Bereich; HASYLAB},
abstract = {During spin coating of very thin films from a solution of
incompatible polymers quite interesting lateral structures
are forming. From scanning force microscopy (SFM) and X-ray
reflectometry it is concluded that a surface height
modulation is present, which reflects at the surface the
phase separated morphology of the blend in the film. Those
structures depend critically on different parameters like
relative concentration of the components, spinning
parameters, solvent quality or compatibility of the blend.
In blends of different statistical copolymers of
poly-styrene-stat-para-bromo-styrene the compatibility
between the blended polymers depends on the difference in
the degree of bromination. This allows a variation of the
interaction parameter within a wide range. Besides
relatively incompatible materials, also weakly incompatible
mixtures are of interest. Such a system with an almost
vanishing but still positive interaction parameter is
realized with blends of poly-styrene and
poly-para-methyl-styrene. Ultra thin polymer films with
thicknesses between 2 to 4 RG were prepared by solvent
quenches from homogeneous solution. The lateral structures
created during the quench are examined with SFM. The SFM
pictures are statistically analysed in terms of their
Fourier components. From the power spectral density function
the most prominent in-plane length scale is extracted. This
analysis of a mean distance is complemented by the use of
Minkowski measures.},
cin = {DESY(-2012)},
ddc = {540},
cid = {$I:(DE-H253)DESY_-2012_-20170516$},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000082190600021},
doi = {10.1039/a809088b},
url = {https://bib-pubdb1.desy.de/record/391859},
}