Formation of finite-scale composition domains when complete macroscopic separation is frustrated, for example by the covalent connection of incompatible blocks in a diblock copolymer. Interfacial cost and chain entropy jointly select the domain scale.
Alternating sheet-like domains of the components of a microphase-separated material. In diblock systems the two layer thicknesses can be unequal and reflect unequal block fractions. Confinement, surface wetting and kinetic trapping can produce layered films outside the thermodynamic equilibrium bulk lamellar region.
A microdomain pattern of approximately parallel cylinders arranged on a two-dimensional hexagonal lattice in the other block's matrix. It is conventionally labelled H in many diblock phase diagrams. Cylinder orientation and defects are additional properties beyond the local morphology.
An ordered morphology in which a minority block forms approximately spherical domains in a continuous majority-block matrix. The lattice packing and phase stability depend on segregation strength, composition and chain statistics. The label S in a phase diagram denotes a morphology, not a spherical shape of the entire specimen.
The transition between a compositionally disordered state and an ordered microdomain state as effective segregation strength increases. The parameter combines unlike-segment interaction preference and chain length; its transition value depends on composition and model assumptions. A bulk thermodynamic equilibrium boundary is not by itself an evaporation or vitrification kinetic model.
A domain structure resembling lamellae pierced by an ordered array of perforations. It is distinct from an unperforated lamellar phase and from a double gyroid.
A bicontinuous domain morphology containing two interpenetrating, nonintersecting networks of one component within the other. In diblock copolymers it can appear between lamellar and cylindrical morphologies in part of the phase diagram.
Articles by others on the same topic
There are currently no matching articles.