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Morphology of ABCD Tetrablock Copolymers Predicted by Self-Consistent Field Theory

✍ Scribed by Rong Wang; Jinglei Hu; Zhibin Jiang; Dongshan Zhou

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
246 KB
Volume
14
Category
Article
ISSN
1022-1344

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✦ Synopsis

Abstract

Summary: We studied the two‐dimensional (2D) microphase‐separated morphology of linear ABCD tetrablock copolymers by self‐consistent field theory. By varying the interaction parameters and the compositions, we found at least twelve structures, two of which – “four‐color” lamellae and “three‐color” core‐shell hexagonal phase – prove the existing experimental observations. These morphologies were discussed in correlation with the volume fraction of the components and the interaction parameters. A specific behavior of symmetrical tetrablock copolymers, i.e., f~A~ = f~D~ and f~B~ = f~C~, is that the stable phases are lamellae, which is different from symmetrical ABC triblock copolymer having order‐to‐order transition. These results are helpful for the design of new block copolymer‐based nanomaterials.
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