title: Coaxial electrospun poly(methyl methacrylate)-polyacrylonitrile nanofibers: atomic force microscopy and compositional characterization.
abstract: Poly(methyl methacrylate) (PMMA)-polyacrylonitrile (PAN) fibers were prepared using a conventional single-nozzle electrospinning technique. The as-spun fibers exhibited core-shell morphology as verified by transmission electron microscopy (TEM) and atomic force microscopy (AFM). AFM-phase and modulus mapping images of the fiber cross-section and X-ray photoelectron spectroscopy (XPS) analysis indicated that PAN formed the shell and PMMA formed the core material. XPS, thermogravimetric analysis (TGA), and elemental analysis were used to determine fiber compositional information. Soaking the fibers in solvent demonstrated removal of the core material, generating hollow PAN fibers.
authors.affiliation: US Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, Maryland 21005, United States. nicole.e.zander.civ@mail.mil
authors.forename: Nicole E
authors.initials: NE
authors.lastname: Zander
authors.forename: Kenneth E
authors.initials: KE
authors.lastname: Strawhecker
authors.forename: Joshua A
authors.initials: JA
authors.lastname: Orlicki
authors.forename: Adam M
authors.initials: AM
authors.lastname: Rawlett
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Beebe
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D056951:Photoelectron Spectroscopy; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D013818:Thermogravimetry
chemical_list: D000180:Acrylic Resins; C010504:polyacrylonitrile; D019904:Polymethyl Methacrylate