Structural hierarchy in blends of amphiphilic block copolymers self-assembled at the air-water interface

dc.contributor.authorHood, Janet
dc.contributor.authorVan Gordon, Kyle
dc.contributor.authorThomson, Patricia
dc.contributor.authorColeman, Brian R.
dc.contributor.authorBurns, Fraser
dc.contributor.authorMoffitt, Matthew G.
dc.date.accessioned2021-06-27T14:57:43Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.description.abstractWe present a concurrent self-assembly strategy for patterning hierarchical polymeric surface features by depositing variable-composition blends of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) and polybutadiene-block-poly(ethylene oxide) (PB-b-PEO) block copolymers at the air-water interface. Hierarchical strand networks of hydrophobic PS/PB blocks anchored via PEO blocks to the water surface, with an internal phase-separation structure consisting of periodic domains of PS blocks surrounded and connected by a matrix of PB blocks, are generated by the interplay of interfacial amphiphilic block copolymer aggregation and polymer/polymer phase separation. In contrast to the cylinder-in-strand structures previously formed by our group in which interfacial microphase separation between PS and PB blocks was constrained by chemical connectivity between the blocks, in the current system phase separation between PS and PB is not constrained by chemical connectivity and yet is confined laterally within surface features at the air-water interface. Investigations of multi-component polymer systems with different connectivities constraining repulsive and attractive interactions provides routes to new hierarchical surface patterns for a variety of applications, including photolithography masks, display technology, surface-guided cell growth and tissue engineering.en_US
dc.description.embargo2021-11-01
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipWe are grateful to the Natural Sciences and Engineering Research Council of Canada, NSERC, for financial support.en_US
dc.identifier.citationHood, J., Van Gordon, K., Thomson, P., Coleman, B. R., Burns, F., & Moffitt, M. G. (2019). Structural hierarchy in blends of amphiphilic block copolymers self-assembled at the air-water interface. Journal of Colloid and Interface Science, 556, 392-400. https://doi.org/10.1016/j.jcis.2019.08.080.en_US
dc.identifier.urihttps://doi.org/10.1016/j.jcis.2019.08.080
dc.identifier.urihttp://hdl.handle.net/1828/13077
dc.language.isoenen_US
dc.publisherJournal of Colloid and Interface Scienceen_US
dc.subjectLangmuir-Blodgett filmsen_US
dc.subjectBlock copolymersen_US
dc.subjectBlendsen_US
dc.subjectSelf-assemblyen_US
dc.subjectPatterningen_US
dc.subjectNanoparticlesen_US
dc.subjectPolymer filmsen_US
dc.titleStructural hierarchy in blends of amphiphilic block copolymers self-assembled at the air-water interfaceen_US
dc.typePostprinten_US

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