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Pressure Effects on Baroplastic Diblock Copolymer Films
Author(s) -
Cho Junhan
Publication year - 2012
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.201100080
Subject(s) - copolymer , materials science , formalism (music) , bridging (networking) , polymer , compressibility , polymer chemistry , chemical physics , thermodynamics , composite material , chemistry , computer science , physics , art , musical , computer network , visual arts
The effect of pressure on the phase behavior of diblock copolymer films is studied by using a field‐theoretic simulation based on a RPA approach for compressible polymer mixtures in the spirit of the TDGL formalism. Some selected baroplastic copolymers exhibiting pressure‐induced suppression of ordering are taken as a model system. The simulation provides a precise description of patterns inside the pressurized baroplastic copolymer films and also of residual layering triggered by selective surfaces. In addition, the TDGL character of the simulation gives the dynamic pathway toward lower‐energy states for the given block copolymer films upon pressurization. The suggested field‐theoretic simulation may be of great use for designing pressure‐related baroprocessing of thin copolymer films.