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Investigating Interfacial Contributions on the Layer‐Thickness‐Dependent Mechanical Response of Confined Self‐Assembly via Forced Assembly
Author(s) -
Burt Tiffani M.,
Jordan Alex M.,
Korley LaShanda T. J.
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200588
Subject(s) - materials science , elastomer , composite material , copolymer , wetting , polystyrene , methyl methacrylate , layer (electronics) , extrusion , composite number , elastic modulus , self assembly , deformation (meteorology) , thin film , wetting layer , nanotechnology , polymer
Understanding block copolymer (BCP) self‐assembly under confinement via conventional melt extrusion is advantageous as technology moves towards thin film applications. Previous research has revealed that confining elastomeric BCPs in thin films with polystyrene (PS) via microlayering results in an increase in ductility with decreasing layer thickness and that the interfacial region dramatically influences the elastic modulus. This contribution investigated the role of interfacial width and layer thickness on deformation mechanics by comparing poly(methyl methacrylate) (PMMA) and PS as wetting layers in confined multilayers. The interfacial region was found to be crucial to tailoring the mechanical response of composite materials.