The effect of added triblock copolymer on the nonlinear rheology of ordered diblock copolymer mesophases
作者:
James L. Harden,
Masao Doi,
期刊:
Journal of Rheology
(AIP Available online 1996)
卷期:
Volume 40,
issue 1
页码: 187-197
ISSN:0148-6055
年代: 1996
DOI:10.1122/1.550734
出版商: The Society of Rheology
关键词: Mesophase, diblock copolymer;Block copolymer;Diblock copolymer;Triblock copolymer;COPOLYMERS;DEFORMATION;SHEAR PROPERTIES;SOLUTIONS;YIELD STRENGTH
数据来源: AIP
摘要:
We present a phenomenological theory for the rheological behavior of ordered mesophases of mixed diblock and triblock copolymer under shear. This theory is based on a coupled multilayer model for mesophase dynamics, and represents the extension of an earlier theory [Doietal., Macromolecules26, 4935 (1993)] for pure diblock copolymer mesophases. We show that added triblock copolymer suppresses yielding behavior in copolymer mesophases. We discuss the possible relevance of our model to experimental rheological and structural studies of microphase‐separated diblock+triblock copolymer solutions in selective solvents.
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