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

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

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)

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.
LanguageEnglish
Pages3235-3240
JournalMacromolecules
Volume32
Issue number10
DOIs
StatePublished - 1999

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Block copolymers
Crystalline materials
Liquids
Microphase separation
Lamellar structures
Liquid crystal polymers
Interfacial energy
Polymers
Thin films
Substrates

Cite this

Sentenac, D. ; Demirel, A.L. ; Lub, Johan ; Jeu, de, W.H./ A new lamellar morphology of a hybrid amorhpous/liquid crystalline block copolymer film. In: Macromolecules. 1999 ; Vol. 32, No. 10. pp. 3235-3240
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Sentenac, D, Demirel, AL, Lub, J & Jeu, de, WH 1999, 'A new lamellar morphology of a hybrid amorhpous/liquid crystalline block copolymer film' Macromolecules, vol. 32, no. 10, pp. 3235-3240. DOI: 10.1021/ma9812581

A new lamellar morphology of a hybrid amorhpous/liquid crystalline block copolymer film. / Sentenac, D.; Demirel, A.L.; Lub, Johan; Jeu, de, W.H.

In: Macromolecules, Vol. 32, No. 10, 1999, p. 3235-3240.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - 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.

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Sentenac D, Demirel AL, Lub J, Jeu, de WH. A new lamellar morphology of a hybrid amorhpous/liquid crystalline block copolymer film. Macromolecules. 1999;32(10):3235-3240. Available from, DOI: 10.1021/ma9812581