Title: The influence of nanoparticle fillers on the morphology of a spin-cast thin film polymer blend
Authors : Minelli, Caterina
Frommen, Christoph
Hinderling, Christian
Pugin, Raphael
Heinzelmann, Harry
Liley, Martha
Published in : Colloid and Polymer Science
Volume(Issue) : 284
Issue : 5
Pages : 482
Pages to: 488
Publisher / Ed. Institution : Springer
Issue Date: 2005
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subject (DDC) : 620.11: Engineering materials
Abstract: Polymer/nanoparticle composite films are receiving growing attention thanks to their potential for application in ultra-thin electronic and optical devices. Polymer blend demixing has been shown to be a suitable technique for the structuring of polymer thin films and the patterning of nanoparticles (NP) within them. In this work we show that the morphology of thin polymer films made by spin-casting a polymer blend solution containing NP fillers on a surface depends strongly on the concentration of NP fillers. More specifically, polystyrene/polymethylmethacrylate (PS/PMMA) films formed from a toluene solution, and which demix following a nucleation and growth mechanism, were studied. It was found that both the height and the surface density of PMMA domains increased as the concentration of CoPt:Cu NPs in the film was increased. We find that similar effects are induced in a NP-free PS/PMMA demixed film upon increasing the molecular weight of the PS molecules. This suggests that under certain conditions the NPs and the polymer molecules in the blend do not behave as separate species but form aggregates.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Publication type: Article in scientific Journal
DOI : 10.1007/s00396-005-1406-2
ISSN: 0303-402X
1435-1536
URI: https://digitalcollection.zhaw.ch/handle/11475/13659
Appears in Collections:Publikationen Life Sciences und Facility Management

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