Perforated Lamellae Morphology in Novel P2VP(PDMS-b-PI-b-PS)2 3-Miktoarm Star Quarterpolymer

The melt morphology of a novel P2VP(PDMS-b-PI-b-PS)2 3-miktoarm star quarterpolymer is investigated. The melt morphology is determined using rheology and small-angle neutron and X-ray scattering data in conjunction with dissipative particle dynamics simulations of a model molecule matching the volum...

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Bibliographic Details
Published in:Macromolecules 2011-02, Vol.44 (3), p.575-582
Main Authors: Kirkensgaard, Jacob Judas Kain, Fragouli, Panagiota, Hadjichristidis, Nikos, Mortensen, Kell
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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Summary:The melt morphology of a novel P2VP(PDMS-b-PI-b-PS)2 3-miktoarm star quarterpolymer is investigated. The melt morphology is determined using rheology and small-angle neutron and X-ray scattering data in conjunction with dissipative particle dynamics simulations of a model molecule matching the volume fractions of the experimental system. The simulations are used to interpret the scattering data and identify the melt morphology as a new perforated lamellae structure. In this structure the P2VP forms hexagonally perforated lamellae containing close-packed protrusions of PS connecting adjacent lamellae layers of PS. The PI part forms a lining between the P2VP and PS domains constrained by the molecular architecture.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma1016314