6533b85bfe1ef96bd12bb739
RESEARCH PRODUCT
Microphase separation in ternary ABC block copolymers: Ordering control in molten diblock AB copolymers by attaching a short strongly interacting C block
Igor ErukhimovichReimund StadlerVolker Abetzsubject
Inorganic ChemistrySpinodalMaterials sciencePolymers and PlasticsTransition temperatureOrganic ChemistryPolymer chemistryMaterials ChemistryCopolymerThermodynamicsBlock (periodic table)Ternary operationdescription
Some specific features of the microphase separation in molten ternary ABC triblock copolymers (in particular, modifications of the molten AB diblock copolymers by attaching a short third block C strongly incompatible with both A and B blocks) are studied rigorously within the framework of the weak segragation approach. It is shown that via such a modification one can control both the stability as to the microphase separation transition (i.e., the corresponding spinodal temparatures) and the smoothness of such a transition. Two modes of such modifications for every composition are studied in detail: (i) those resulting in the minimal spinodal temperatures and (ii) those that result in the smooth order−disorder transition at this composition. The corresponding dependencies of the transition temperature and the periodicity of the occurring supercrystal structures are built and analyzed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 |