title: Roll-to-roll atmospheric plasma treatment: a green and efficient process to improve the hydrophilicity of a PET surface.
abstract: Poly(ethylene terephthalate) (PET) fibers are widely used in various fields owing to their good physical properties and chemical resistance, but PET hydrophobicity heavily compromises its use in many applications. Wet-chemical treatments are often required to induce hydrophilicity, but these can damage the polymer matrix and produce large volumes of liquid wastes. Atmospheric-pressure glow-discharge plasma (APGDP) is an alternative and ecofriendly method to obtain similar or better results with polymeric materials, compared to wet-chemical treatments. The hydrophilic behavior of PET samples is investigated after a roll-to-roll APGDP treatment by varying the plasma gas mixture, gas fluxes, and electrode temperatures. The reactive species formed in the plasma chamber are characterized by optical emission spectroscopy. The induced surface functionalization and roughness are characterized by contact-angle measurements, atomic force microscopy, and UV/Vis absorbance of a probe dye.
authors.affiliation: Department of General Chemistry and Organic Chemistry and NIS, Interdepartmental Centre of Excellence, University of Torino, C.so M. d'Azeglio 48, 10125 Torino, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: Bonandini
authors.forename: Nadia
authors.initials: N
authors.lastname: Barbero
authors.forename: Katiuscia
authors.initials: K
authors.lastname: Costabello
authors.forename: Chiara
authors.initials: C
authors.lastname: Pavan
authors.forename: Francesco
authors.initials: F
authors.lastname: Parisi
authors.forename: Guido
authors.initials: G
authors.lastname: Viscardi
mesh_terms: D001272:Atmosphere; D001274:Atmospheric Pressure; D004396:Coloring Agents / Q000737:chemistry; D005740:Gases / Q000737:chemistry; D055772:Green Chemistry Technology / Q000379:methods*; D057927:Hydrophobic and Hydrophilic Interactions; D018625:Microscopy, Atomic Force; D011092:Polyethylene Glycols / Q000737:chemistry*; D011093:Polyethylene Terephthalates; D013056:Spectrophotometry, Ultraviolet; D013499:Surface Properties; D013696:Temperature; D017155:Wettability
chemical_list: D004396:Coloring Agents; D005740:Gases; D011093:Polyethylene Terephthalates; D011092:Polyethylene Glycols