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TEM- and neutron reflection studies on surfaces and interfaces with block copolymers

Stark, B. and Scherble, J. and Ganter, M. and Kressler, J. and Stühn, B. and Lauter, J. (1998):
TEM- and neutron reflection studies on surfaces and interfaces with block copolymers.
In: Macromolecular Symposia, pp. 323-330, 126, [Article]

Abstract

The behavior of block copolymers at various interfaces is studied by transmission electron microscopy and neutron reflection. A thin film of a symmetric diblock copolymer of styrene and methyl methacrylate forms layer structures when in contact with air and a random copolymer of styrene and acrylonitrile containing 35 wt% acrylonitrile. When the random copolymer has an acrylonitrile content of 25 wt%, a competition between layer formation and diffusion of disordered micelles takes place. Driving force for these processes are different interfacial tensions and a changing miscibility behavior as a function of acrylonitrile contents of the random copolymers. The ordering behavior of a symmetric diblock copolymer of deuterated styrene and isoprene in contact with poly(3,5-dimethyl phenylene ether) is studied by neutron reflection. Polystyrene-block-poly(ethene-co-but-1-ene)-block-polystyrene with cylindrical PS microdomains shows an interfacial phase transition to lamellae near to the interface with different polymers. nle morphological studies are in agreement with adhesion data obtained by peel tests on different bilayer specimens.

Item Type: Article
Erschienen: 1998
Creators: Stark, B. and Scherble, J. and Ganter, M. and Kressler, J. and Stühn, B. and Lauter, J.
Title: TEM- and neutron reflection studies on surfaces and interfaces with block copolymers
Language: English
Abstract:

The behavior of block copolymers at various interfaces is studied by transmission electron microscopy and neutron reflection. A thin film of a symmetric diblock copolymer of styrene and methyl methacrylate forms layer structures when in contact with air and a random copolymer of styrene and acrylonitrile containing 35 wt% acrylonitrile. When the random copolymer has an acrylonitrile content of 25 wt%, a competition between layer formation and diffusion of disordered micelles takes place. Driving force for these processes are different interfacial tensions and a changing miscibility behavior as a function of acrylonitrile contents of the random copolymers. The ordering behavior of a symmetric diblock copolymer of deuterated styrene and isoprene in contact with poly(3,5-dimethyl phenylene ether) is studied by neutron reflection. Polystyrene-block-poly(ethene-co-but-1-ene)-block-polystyrene with cylindrical PS microdomains shows an interfacial phase transition to lamellae near to the interface with different polymers. nle morphological studies are in agreement with adhesion data obtained by peel tests on different bilayer specimens.

Journal or Publication Title: Macromolecular Symposia
Volume: 126
Divisions: 05 Department of Physics > Institute for condensed matter physics
05 Department of Physics
Date Deposited: 27 Feb 2010 12:41
Additional Information:

6th Dresden Polymer Discussion on Surface Modification, MEISSEN, GERMANY, APR 14-17, 1997

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