Star Polymers: From Conformations to Interactions to Phase Diagrams

Likos,; Harreis,

doi:10.5488/cmp.5.1.173

Cited by 29 publications

(35 citation statements)

References 99 publications

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“…The functionality-dependent bcc-and fcc-solids [17,18], as well as the reentrant melting transition [19], have been experimentally observed in solutions of star-like block copolymer micelles. A second freezing transition observed in the same experiments can be interpreted as the freezing in a bco crystal [20].…”

Section: Introductionmentioning

confidence: 57%

Star polymers: A study of the structural arrest in the presence of attractive interactions

et al. 2004

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Simulations and Mode-Coupling Theory calculations, for a large range of the arm number f and packing fraction η have shown that the structural arrest and the dynamics of star polymers in a good solvent are extremely rich: the systems show a reentrant melting of the disordered glass nested between two stable fluid phases that strongly resemble the equilibrium phase diagram. Starting from a simple model potential we investigate the effect of the interplay between attractive interactions of different range and ultrasoft core repulsion, on the dynamics and on the occurrence of the ideal glass transition line. In the two cases considered so far, we observed some significant differences with respect to the purely repulsive pair interaction. We also discuss the interplay between equilibrium and non equilibrium phase behavior. The accuracy of the theoretical tools we utilized in our investigation has been checked by comparing the results with molecular dynamics simulations.

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Section: Introductionmentioning

confidence: 57%

Star polymers: A study of the structural arrest in the presence of attractive interactions

et al. 2004

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“…We observed that the addition of hydroxylsubstituted anthracene molecules increases the rigidity of PS-b-P4VP micelles and promotes hexagonal order 119 . Rigid micelles could have a behavior closer to star copolymers 120 or hairy nanoparticles with inorganic core 121,122 , but in opposite to those, they would still be able to deform or fuse, if the thermodynamic conditions allow it. By immersion in water a fast solvent exchange takes place, particularly in the layer close to the solution-water interface, leading to abrupt changes in the thermodynamic conditions with consequent gelation and kinetic trapping of the self-assembly morphology.…”

Section: Snips Processmentioning

confidence: 99%

Block Copolymer Membranes for Aqueous Solution Applications

2016

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Block copolymers are known for their intricate morphology. We review the state of the art of block copolymer membranes and discuss perspectives in this field. The main focus is on pore morphology tuning with a short introduction on non-porous membranes. The two main strategies for pore formation in block copolymer membranes are (i) film casting and selective block sacrifice and (ii) self-assembly and non-solvent induced phase separation (SNIPS). Different fundamental aspects involved in the manufacture of block copolymer membranes are considered, including factors affecting the equilibrium morphology in solid films, self-assembly of copolymer in solutions and macrophase separation by solvent-non-solvent exchange. Different mechanisms are proposed for different depths of the SNIPS membrane. Block copolymer membranes can be prepared with much narrower pore size distribution than homopolymer membranes. Open questions and indications of what we consider the next development steps are finally discussed. They include the synthesis and application of new copolymers and specific functionalization, adding characteristics to respond to stimuli and chemical environment, polymerization-induced phase separation, and the manufacture of organic-inorganic hybrids.3

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“…Such soft potentials arise as the effective interaction potential between polymers or soft macromolecules in solution [25][26][27][28][29][30][31][32][33][34][35][36][37]. Our main reason for considering this model centres on the fact that the structure and phase behaviour (i.e.…”

Section: Model Fluidmentioning

confidence: 99%

Generation of Defects and Disorder from Deeply Quenching a Liquid to Form a Solid

Archer

Walters

Thiele

et al. 2016

Springer Proceedings in Mathematics &Amp; Statistics

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We show how deeply quenching a liquid to temperatures where it is linearly unstable and the crystal is the equilibrium phase often produces crystalline structures with defects and disorder. As the solid phase advances into the liquid phase, the modulations in the density distribution created behind the advancing solidification front do not necessarily have a wavelength that is the same as the equilibrium crystal lattice spacing. This is because in a deep enough quench the front propagation is governed by linear processes, but the crystal lattice spacing is determined by nonlinear terms. The wavelength mismatch can result in significant disorder behind the front that may or may not persist in the latter stage dynamics. We support these observations by presenting results from dynamical density functional theory calculations for simple one-and two-component two-dimensional systems of soft core particles.

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Star Polymers: From Conformations to Interactions to Phase Diagrams

Cited by 29 publications

References 99 publications

Star polymers: A study of the structural arrest in the presence of attractive interactions

Star polymers: A study of the structural arrest in the presence of attractive interactions

Block Copolymer Membranes for Aqueous Solution Applications

Generation of Defects and Disorder from Deeply Quenching a Liquid to Form a Solid

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