Phase Behavior of Weakly-segregated Multiblock Copolymers with Two-scale Periodic Architecture

Abstract

Abstract:The phase behavior of a melt of periodic two-scale multiblock copolymers has been theoretically studied in the framework of the Weak-Segregation Limit theory. The effect of the structural symmetry of the macromolecules on the vertex functions of the Landau free energy expansion is considered in detail. The existence of a thermodynamically stable mesophase with a two length-scale space periodicity has been revealed for a melt of monodisperse periodic heteropolymers.

Preparation and self-assembly of two-length-scale A-b-(B-b-A)n-b-B multiblock copolymers

“…AB multiblock copolymers involving end blocks that differ in length from the blocks of the middle multiblock. [22][23][24][25][26][27][28][29][30] Despite the fact that only two chemically different species are involved, the presence of two different intrinsic length scales may result in hierarchical structure formation. Such a ''structure-in-structure'' morphology was first reported for supramolecules consisting of poly(styrene-b-4vinylpyridine) diblock copolymers with relatively short side chains (pentadecyl phenol) hydrogen bonded to the pyridine blocks.…”

Lamellar-in-lamellar self-assembled C–b–(B–b–A)m–b–B–b–C multiblock copolymers: Alexander–de Gennes approach and dissipative particle dynamics simulations

“…During the past decades hierarchically ordered block copolymers and block copolymer based systems have been an attractive subject for experimental [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and theoretical [16][17][18][19][20][21][22] investigations. The growing interest in this class of systems is due to the possibilities of creating periodic structures combining different periodicities.…”

Lamellar-in-lamellar structure of binary linear multiblock copolymers

“…They became an attractive subject for experimental [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and theoretical [16][17][18][19][20] investigations due to the possibilities to form structures combining different periodicities. One of the first observations of a doubleperiodic self-assembled structure involved the self-assembly in polystyrene-block-poly͑4-vinylpyridine͒ ͑PS-b-P4VP͒ diblock copolymers with hydrogen-bonded pentadecylphenol ͑PDP͒ side chains to the P4VP block.…”