Double periodic lamellar-in-lamellar structure in multiblock copolymer melts with competing length scales

Rikkert Nap, Nazar Sushko, Igor Erukhimovich, Gerrit ten Brinke*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

54 Citaten (Scopus)
326 Downloads (Pure)

Samenvatting

The results of a detailed theoretical investigation of the phase behavior of A(m)-b-(B-b-A)(n) multiblock copolymer melts are presented for the special case of m = 20 and n = 10. The presence of two strongly different molecular length scales results in the formation of a large-length-scale lamellar structure of alternating A(20) and (B-b-A)(10) layers on cooling. On further cooling, the (B-b-A)(10) layers subsequently transform internally into small-length-scale layers of the A and B blocks: a lamellar-in-lamellar morphology. The final structure consists of an alternation of one "thick" layer and seven "thin" layers and compares favorably with recent experimental results of Matsushita and co-workers on slightly different systems.

Originele taal-2English
Pagina's (van-tot)6765-6770
Aantal pagina's6
TijdschriftMacromolecules
Volume39
Nummer van het tijdschrift19
DOI's
StatusPublished - 19-sep.-2006

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