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Surface structure analysis of thin dewetted polymer blend films
Author(s) -
MüllerBuschbaum Peter,
Gutmann Jochen S.,
Stamm Manfred,
Cubitt Robert
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200001)149:1<283::aid-masy283>3.0.co;2-t
Subject(s) - dewetting , materials science , polystyrene , polymer , thin film , grazing incidence small angle scattering , glass transition , substructure , annealing (glass) , small angle neutron scattering , composite material , neutron scattering , scattering , optics , nanotechnology , physics , structural engineering , engineering
The surface structure of thin polymer blend films of deuterated polystyrene (dPS) and polyparamethylstyrene (PpMS) after annealing above the glass transition temperature was investigated. With scanning force microscopy (SFM) the surface topography originated by a dewetting process is detected. The sample surface is covered with small droplets consisting of several polymer molecules. Utilizing grazing incidence small angle neutron scattering (GISANS) the topographical information as well as the in‐plane composition is probed. For thin confined blend films a substructure of the droplets resulting from an additional phase separation process at different length scales is detected.