Hierarchical structure-within-structure morphologies in A-block-(B-graft-C) molecules
Journal
Macromolecular Rapid Communications
Journal Volume
28
Journal Issue
16
Pages
1634-1639
Date Issued
2007
Author(s)
Abstract
Abstract We have used dissipative particle dynamics (DPD) to simulate the self‐assembling behavior of A‐ block ‐(B‐ graft ‐C) coil‐comb molecules, in which each B segment is covalently bonded with one C segment. In addition to the composition, we found that by varying any of the interaction parameters between each pair of components I and J , where I , J = A, B, C, we can also induce a series of morphology transitions associated with two length scales. Moreover, we observed that if the length of the BC‐comb block is not long enough, the resulting morphology is mainly in the large‐length‐scale, ordering between the A‐rich and C‐rich domains with most of the B in the interfaces. By increasing the length of the BC‐comb block, one may expect that both B and C can pack orderly to form a lamellar structure. As a result, various experimentally observed structure‐within‐structures have been simulated via DPD. magnified image
SDGs
Type
journal article