Magnetic field induced orientation in diblock copolymers with one crystallizable block

Autor:	Grigorova, T. Pispas, S. Hadjichristidis, N. Thurn-Albrecht, T.
Jazyk:	angličtina
Rok vydání:	2005
Popis:	Using wide-angle X-ray scattering, we show that diblock copolymers with one crystallizable block can be oriented by crystallization in a strong magnetic field (B = 7 T). The resulting structure consists of a stack of alternating crystalline and amorphous layers of different chemical compositions with the layer normal being oriented perpendicular to the applied field. As a necessary prerequisite the crystallization process has to start with a high nucleation density. Orientation parameters of about S ≈ -0.3 have been achieved. This approach presents a novel route to produce oriented chemically heterogeneous nanostructured materials. © 2005 American Chemical Society.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=od______2127::1322ed402c398dd44819914c91f28b0f https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3012555 Zobrazit plný text záznamu