title: Solvent-annealing-induced nanowetting in templates: towards tailored polymer nanostructures.
abstract: We study the solvent-annealing-induced nanowetting in templates using porous anodic aluminum oxide membranes. The morphology of polystyrene and poly(methyl methacrylate) nanostructures can be controlled, depending on whether the swollen polymers are in the partial or complete wetting regimes, which are characterized by the spreading coefficient. When the swollen polymers are in the partial wetting regime, polymers wet the nanopores by capillary action, resulting in the formation of polymer nanorods. When the swollen polymers are in the complete wetting regime, polymers form wetting layers in the nanopores, resulting in the formation of polymer nanotubes. The solubility parameters of polymers and solvents are also used to predict the wetting behavior of swollen polymers in cylindrical geometry.
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050. jtchen@mail.nctu.edu.tw
authors.forename: Jiun-Tai
authors.initials: JT
authors.lastname: Chen
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Lee
authors.forename: Mu-Huan
authors.initials: MH
authors.lastname: Chi
authors.forename: I-Chun
authors.initials: IC
authors.lastname: Yao
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D058608:Nanopores; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D012995:Solubility; D012997:Solvents / Q000737:chemistry*
chemical_list: D011137:Polystyrenes; D012997:Solvents; D019904:Polymethyl Methacrylate; D000537:Aluminum Oxide