title: Fluorescent labeling and tracking of nanoclay.
abstract: We report a methodology developed to detect and track stable fluorescent-labeled nanoclay, in polymer-clay nanocomposite films, and in a contact solvent after migration testing. Fluorescein-5-maleimide (fluorescein) or tetramethylrhodamine-5-maleimide (rhodamine) was covalently bonded to organically modified montmorillonite (o-MMT). Fluorescein- and rhodamine-labeled nanoclay showed good thermal stability up to 220 °C and the rhodamine-labeled nanoclay remained stable at 250 °C. Confocal laser scanning microscopy was used to confirm the tagging and to detect the fluorescent-labeled nanoclays in various systems.
authors.affiliation: School of Packaging, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Diaz
authors.forename: Yining
authors.initials: Y
authors.lastname: Xia
authors.forename: Maria
authors.initials: M
authors.lastname: Rubino
authors.forename: Rafael
authors.initials: R
authors.lastname: Auras
authors.forename: Krishnamurthy
authors.initials: K
authors.lastname: Jayaraman
authors.forename: Joseph
authors.initials: J
authors.lastname: Hotchkiss
mesh_terms: D000538:Aluminum Silicates / Q000032:analysis* / Q000737:chemistry*; D000077215:Clay; D008422:Materials Testing; D008856:Microscopy, Fluorescence / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012235:Rhodamines / Q000032:analysis* / Q000737:chemistry; D013194:Staining and Labeling
chemical_list: D000538:Aluminum Silicates; D012235:Rhodamines; D000077215:Clay