Phase Behavior and Structural Size of a Block Copolymer in the Presence of a Selective Solvent
Date Issued
2005
Date
2005
Author(s)
Hsueh, Hsiao-Yang
DOI
zh-TW
Abstract
We employ both self-consistent mean-field (SCMF) theory and dissipative particle dynamics (DPD) to investigate the phase behavior and analyze the microstructural size for a block copolymer in the presence of a selective solvent. In particular, the effects of copolymer composition, copolymer volume fraction, degree of copolymerization, and solvent selectivity are examined. We find that when a solvent selective for the minority block is added, a face-centered cubic phase of the majority-forming spheres is more stable with increasing the solvent selectivity and/or decreasing the copolymer volume fraction. While a body-centered cubic array is always observed when the minority block forms the spheres. Our numerical results have been consistent with reported experimental results.
Subjects
自洽平均場
分散粒子動力學
塊狀共聚合物
溶液
SCMF
DPD
block copolymer
solution
Type
thesis
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