Theory of supermolecular structures in polydisperse block copolymers: 5. New double cylindrical structure in binary mixture of cylinder-forming diblock copolymers

Birshtein, T.M.; Lyatskaya, Yu.V.; Zhulina, Ekaterina B.

doi:10.1016/0032-3861(92)90449-7

Cited by 20 publications

(38 citation statements)

References 14 publications

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“…For instance, using polymer self-consistent field theory (SCFT), , Shi, Noolandi and co-workers, − Matsen, , and others , have constructed phase diagrams of binary blends of diblock copolymers and identified the influence of the different physicochemical parameters. In a series of articles, Birhstein and co-workers examined the phase behavior of binary blends of diblock copolymers using strong segregation theory. − Their predictions were in very good agreement with the experimental results of Hashimoto and co-workers − …”

Section: Introductionmentioning

confidence: 73%

Curvature Modification of Block Copolymer Microdomains Using Blends of Block Copolymers with Hydrogen Bonding Interactions

et al. 2012

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We present a strong stretching theory model for microphase segregation of AB + AC block copolymer blends in which the B and C segments possess strongly attractive (hydrogen bonding) interactions. In microphase separated morphologies, we demonstrate that the attraction between the B and the C segments causes a bending force toward the A layers. Such bending forces may induce transitions from lamellar and A-majority cylindrical morphologies in the pure component systems to "inverted" cylindrical and spherical morphologies in blends in which the B and C segments constitute the matrix phase. Similar driving forces may also drive transitions from A-majority spherical phases in pure component systems to highly asymmetric lamellar morphologies in blends. The predictions of our model are in excellent agreement with the trends observed in recent experimental results.

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Section: Introductionmentioning

confidence: 73%

Curvature Modification of Block Copolymer Microdomains Using Blends of Block Copolymers with Hydrogen Bonding Interactions

et al. 2012

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“…Birshtein et al considered besides macrophase separation also the lamellar superlattice, a mixed cylindrical phase and a core-shell cylindrical phase for a blend of two diblock copolymers varying from each other only in the length of the second block in the strong segregation limit 86) . Borovinskii et al studied blends of an AB and a BC diblock copolymer with similar B blocks in the strong segregation limit.…”

Section: Blends Of Different Binary Block Copolymersmentioning

confidence: 99%

Formation of superlattices via blending of block copolymers

Abetz

Goldacker

2000

Macromol. Rapid Commun.

191

182

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“…Core−shell microphase-separated structures involving concentric layers with cylindrical geometry have been postulated but rarely observed experimentally. Specifically, core−shell structures have not been seen in diblock copolymers, although a core−shell cylinder morphology was theoretically predicted for blends of diblock copolymers A−B 1 and A−B 2 , where the A block was the same length for both copolymers. To date, this theoretical prediction has not been experimentally confirmed.…”

Section: Introductionmentioning

confidence: 99%

Core−Shell Cylinder Morphology in Poly(styrene-b-1,3-cyclohexadiene) Diblock Copolymers

David¹,

Gido²,

Hong³

et al. 1999

Macromolecules

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A microphase-separated core−shell cylinder morphology has been observed, via transmission electron microscopy and small-angle X-ray scattering, in diblock copolymers of polystyrene (PS) and poly(1,3-cyclohexadiene) (PCHD). The structures consist of PS cylindrical cores surrounded by PCHD cylindrical annuli which are then hexagonally packed in a matrix of PS. The materials were produced by anionic polymerization of styrene followed by 1,3-cyclohexadiene. Characterization by size exclusion chromatography revealed a main peak due to diblock with a very narrow molecular weight distribution. However, a significant amount of PS homopolymer (about 30%) was present in the as-synthesized materials. The as-synthesized materials with homopolymer present produced core−shell morphologies, and these structures became much more regular when the homopolymer was removed by fractionation. After fractionation, the pure core−shell forming diblocks had PCHD volume fractions of around 0.37 and polydispersities well under 1.1.

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Theory of supermolecular structures in polydisperse block copolymers: 5. New double cylindrical structure in binary mixture of cylinder-forming diblock copolymers

Cited by 20 publications

References 14 publications

Curvature Modification of Block Copolymer Microdomains Using Blends of Block Copolymers with Hydrogen Bonding Interactions

Curvature Modification of Block Copolymer Microdomains Using Blends of Block Copolymers with Hydrogen Bonding Interactions

Formation of superlattices via blending of block copolymers

Core−Shell Cylinder Morphology in Poly(styrene-b-1,3-cyclohexadiene) Diblock Copolymers

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