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Phase separation of block copolymer

More recently, many studies have been reported on the micro-phase separation of block copolymers with multidimensional confinements including cylindrical and spherical shapes. Shin and Xiang s group (Shin et al., 2004 Xiang et al., 2004 Xiang et al., 2005a) observed the... [Pg.185]

Despite these successes, molecular modelling will never be able to address phenomena, which involve length scales of hundreds of nanometers and more, such as the phase separation of block-copolymers, or very long timescales, such as mechanical properties related to sub Tg relaxations. Therefore more and more effort is devoted to the development of mesoscale models linked in a well defined way to the atomic level. [Pg.247]

As with phase separation of block copolymers in bulk, the nature and size of the aggregates formed in a block-selective solvent depends on the relative sizes of the two blocks as well as the overall molecular weight of the diblock copolymer. In... [Pg.494]

E.g., in polymer chemistry phase separation of block copolymers or the formation of defined micelles is being used (3-10). [Pg.248]

The practical synthesis of hierarchical networks can be achieved in various ways quite commonly colloid particles are used for templating the macropores, while meso- and micropores can be introduced by phase separation of block copolymers or surfactants. [Pg.161]

The phase separation of block copolymers in bulk is also the driving force for their self-assembly. Self-assembly of amphiphilic block copolymers in specific solvents leads to a vast variety of aggregates where functionality can be compartmentalized like in micelles and various types of vesicles like polymersomes (Fig. 5.5a). The type of vesicle formed depends on the hydro-phobic/hydrophilic ratio and the block length of the block copolymers (Fig. 5.9 see also Section 6.1). Different functionalities, like a metal binding group, complexation units, bioactive groups, or pH or salt concentration-sensitive units, can then be placed selectively into one of the phases, for example, at the inner part of a micellar structure or in the corona. [Pg.193]

Figure 4. Schematic representations of five types of microstructures for phase separation of block copolymer as a function of composition [55]. Figure 4. Schematic representations of five types of microstructures for phase separation of block copolymer as a function of composition [55].
Yu, K., Wang, H., Han, Y. (2007). Motion of integrated CdS nanoparticles by phase separation of block copolymer brushes. Langmuir, 23, 8957-8964. [Pg.146]

Instead of the MC and MD methods using explicit particles, another method, that is, polymeric self-consistent field theory (SCFT) proposed by Edwards, is often used to study the phase separation of block copolymers. In SCFT, a polymer chain is treated as a Gaussian string, which is exposed to a set of effective chemical potentials ( ). The chemical potentials are used instead of the actual interactions between different components. Importantly, the relation between the external potentials and the concentration field ((/>) is bijective. [Pg.286]


See other pages where Phase separation of block copolymer is mentioned: [Pg.479]    [Pg.132]    [Pg.150]    [Pg.30]    [Pg.30]    [Pg.31]    [Pg.218]    [Pg.155]    [Pg.248]    [Pg.161]    [Pg.628]    [Pg.143]    [Pg.152]    [Pg.12]    [Pg.1575]    [Pg.538]    [Pg.11]    [Pg.13]    [Pg.997]    [Pg.989]    [Pg.260]    [Pg.92]   
See also in sourсe #XX -- [ Pg.150 ]




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