A new lamellar morphology of a hybrid amorhpous/liquid crystalline block copolymer film

D. Sentenac, A.L. Demirel, Johan Lub, W.H. Jeu, de

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22 Citations (Scopus)
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Abstract

We study the morphology of a thin film made of a hybrid amorphous/side chain liquid crystalline diblock copolymer, in which the amorphous polymer is similar to the backbone of the liquid crystalline polymer. Microphase separation in the smectic A phase leads to a terraced film made of alternating amorphous and smectic layers, both parallel to the substrate. This new lamellar morphology differs from the bulk ordering where minimization of the block-block interfacial energy results in an orthogonal arrangement. We discuss the stability of such a lamellar structure in the film by considering the influence of the surface field on the internal diblock specific interactions.
Original languageEnglish
Pages (from-to)3235-3240
JournalMacromolecules
Volume32
Issue number10
DOIs
Publication statusPublished - 1999

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