title: Ultrathin and large-area macroporous polymeric membranes formed through self-assembly of sub-10 nm elastic nanoparticles.
abstract: A variety of sub-10 nm nanoparticles are successfully prepared by crosslinking of polystyrene-b-poly(1,3-butadiene) (PS-b-PB) and polystyrene-b-poly(4-vinyl pyridine) (PS-b-P4VP) block copolymer micelles and inverse micelles. Among them, the core-crosslinked PS-b-PB micelles can self-assemble into ultrathin (< 10 nm) macroporous (pore size <1 µm) membranes in a facile way, i.e., by simply drop-coating the particle solution onto a mica surface. No continuous/porous membranes are produced from shell-crosslinked PS-b-PB micelles and both forms of PS-b-P4VP micelles. This suggests that the unique structure of the block copolymer precursor, including the very flexible core-forming block and the glassy corona-forming block and the specific block length ratio, directly determines the formation of the macroporous membrane.
authors.affiliation: Bayreuther Zentrum fuer Kolloide und Grenzflaechen, Universitaet Bayreuth, D-95440 Bayreuth, Germany. yong.zhang@ucd.ie
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
mesh_terms: D004548:Elasticity; D008567:Membranes, Artificial; D053758:Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D016062:Porosity
chemical_list: D008567:Membranes, Artificial; D011108:Polymers