Abstract
The chain conformation and structure for an A10B10A10 triblock copolymer (ABA) in blends (ABA/B) consisting of A10B10A10 triblock copolymer and homopolymer B(h-B) were studied by a Monte Carlo simulation method. Two kinds of curves, (fraction of bridged ABA chains) vs. ABA% (content of ABA copolymer in the blends) or (the length of homopolymer B) and (mean square radius of the gyration) vs. ABA% or, were utilized to explore the effects of and homopolymer content on the chain conformation and blending structure. For all blends consisting of A10B10A10/h-B, the turning point can be observed at around = (Lb-B is the length of block B of ABA copolymer) in the vs. curves. An obvious decrease-increase-decrease transition process was observed based on the vs. ABA% curves. The different parts in the curves correspond to different structures, in which the ABA copolymer chains mainly have “chain loops” or “chain bridges” conformation.
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