Nanoparticle anisotropy induces sphere-to-cylinder phase transition in block copolymer melts

Diaz, Javier, Pinna, Marco, Zvelindovsky, Andrei and Pagonabarraga, Ignacio (2022) Nanoparticle anisotropy induces sphere-to-cylinder phase transition in block copolymer melts. Soft Matter Communication, 19 . ISSN 1744-683X

Full content URL: https://doi.org/10.1039/D2SM00214K

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Nanoparticle anisotropy induces sphere-to-cylinder phase transition in block copolymer melts
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Abstract

Block copolymer nanocomposites including anisotropic nanoparticles have been previously found to co-assemble into complex structures with nanoparticle alignment. Anisotropic nanoparticles with large aspect ratios are found to modify the morphology of block copolymers at modest concentrations, inducing a sphere-tocylinder phase transition by breaking the local symmetry in the vicinity of a solid particle. This transition takes place over a wide range of NP lengths comparable with the BCP spacing. Controlling the orientation of uniaxial nanoparticles provides additional control over the global orientation of the block copolymer, as previously reported by experiments.

Keywords:Computer simulation, Phase Transition, Anisotropic nanoparticles, Diblock copolymer
Subjects:F Physical Sciences > F200 Materials Science
F Physical Sciences > F300 Physics
F Physical Sciences > F162 Polymer Chemistry
F Physical Sciences > F343 Computational Physics
G Mathematical and Computer Sciences > G120 Applied Mathematics
Divisions:College of Science > School of Mathematics and Physics
ID Code:49239
Deposited On:13 May 2022 11:14

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