Double-phase separated morphology

Figure 19. Double-phase-separated morphology reported from the 2D simulations of the phase separation in the hydrodynamic regime [158]. This figure has been kindly provided by Dr. T. Araki. 

Dynamic mechanical spectra of the iPP/EBR (75/25) blends are shown in Fig. 9.3. In the blends with phase-separated morphology for example, iPP/ EBR36, double peaks appear in the tensile loss modulus E" curve distinctly in the temperature range from 200 to 300K, which are assigned as and in the order of... 

Different phase separated morphologies can be found in different polymer solvent systems. The pattern formation consists of several stages. In the initial stage, phase separation results in a layered morphology of the two solvent swollen phases. As more solvent evaporates, this double layer is destabilized in two ways (1) capillary instability of the interface, and (2) surface instability. Each of the mechanisms results in different morphological length scales. Core shell spherical domains in phase-separated ternary systems have also been found. The shell thickness can be a few nanometers. 

In this paper, we investigate the domain morphology in the phase separation of copolymer-homopolymer mixtures. Computer simulations are carried out in two dimensions to explore the kinetics of the double-phase separation. An interfadal approach is applied to study the relative stability of the domain patterns and to evaluate the bending and the curvature moduli of a bilayer membrane. 

One of the imique features of phase separated block copolymers involves their ordered morphologies which can include spheres, cylinders, lamellae, bicontinuous as well as ordered bicontinuous doubled diamond and gyroid structures (see Figs. 4.17 and 4.18). Gyroid struc-... 

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