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Authors
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John, A. ; Friedel, P. ; Pospiech, D. ; Jehnichen, D. ; Gottwald, A.
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Title
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Modelling of the Phase Separation Behaviour of Polydisperse Semi-Flexible Diblock Copolymers
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Date
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08.11.2004
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Number
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11926
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Abstract
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<B>Summary:</B> A modified random phase approximation method with a cumulant expansion for the semi-flexible structure factor of diblock copolymers was exercised to describe the phase separation behavior of semi-flexible and polydisperse diblock copolymers. Scattering curves and spinodal diagrams were calculated applying monomer specific input parameters. The influence of polydispersity was included applying basic concepts of mathematical statistics utilizing several probability density distributions in the case of the two single blocks. In contrast to semi-flexibility, the main effect of polydispersity was found to shift the spinodal up, thus to enlarge the range of existence of the homogeneous phase.
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Publisher
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Macromolecular Theory and Simulation
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Wikidata
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6
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Citation
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Macromolecular Theory and Simulation 13 (2004) 702-710
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DOI
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https://doi.org/10.1002/mats.200400022
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Tags
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diblock copolymers phase separation polydispersity random phase approximation semi-flexibility statistical multiblock copolymers molecular-weight distributions microphase separation block-copolymers melts scattering polymers segments mixtures kinetics
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