6533b85cfe1ef96bd12bc729
RESEARCH PRODUCT
Cylindrical morphologies in asymmetric ABC triblock copolymers
Reimund StadlerVolker AbetzUdo KrappeUlrike Breinersubject
Materials scienceMorphology (linguistics)Polymers and PlasticsOrganic ChemistryCondensed Matter PhysicsCore shellchemistry.chemical_compoundchemistryPolymer chemistryMaterials ChemistryCopolymerCylinderSPHERESPhysical and Theoretical ChemistryMethyl methacrylatedescription
In asymmetric ABC triblock copolymers with C being the matrix-forming majority component, the formation of cylindrical morphologies is governed by the sum of the volume fractions of the components A and B (Φ A + Φ B ) as well as by their ratio (Φ B /Φ A ). The paper describes the morphologies of various polystyrene-block-polybutadiene-block-poly(methyl methacrylate) (SBM) and polystyrene-block-poly(ethylene-co-butylene)-block-poly(methyl methacrylate) block copolymers (SEBM) in dependence on these parameters. In addition to previously reported cylinder in cylinder (c i c, core shell) and helical (hel) morphologies, new microphase separated structures as cylinders at cylinder (c a c), undulated/perforated cylinder in cylinder (uc i c) and spheres on cylinder (s o c) are discussed. Based on a simple theoretical approach the transitions between these various morphologies are predicted. especially focusing on the transition between the c i c and c a c morphologies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-04-01 | Macromolecular Chemistry and Physics |