Atom transfer radical polymerization of styrene from different poly(ethylene terephthalate) surfaces: Films, fibers and fabrics |
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Authors: | Loï c Bech,Tamara Elzein,Arnaud Ponche,Bé né dicte Lepoittevin,Philippe Roger |
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Affiliation: | a Univ Paris-Sud, Laboratoire de Chimie Organique Multifonctionnelle, Equipe Glycochimie Moléculaire et Macromoléculaire, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR 8182, Bâtiment 420, Orsay F-91405, France b CNRS, Orsay F-91405, France c Institut de Chimie des Surfaces et des Interfaces (ICSI), CNRS UPR 9069, 15, rue Jean Starcky, BP 2488, Mulhouse F-68057, France d UMR 763 BHM, INRA-AgroParisTech, 25, Avenue de la République, Massy F-91744, France |
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Abstract: | Poly(ethylene terephthalate) (PET) is a semi-crystalline thermoplastic polyester used in many fields. For a variety of applications, however, it is necessary to impart desired properties by introducing specific functional groups on the surface. A simple method for growing polymer brushes by atom transfer radical polymerization (ATRP) on PET films, fibers and fabrics was devised. The different PET surfaces were first reacted with 1,2-diaminoethane by aminolysis reaction to incorporate primary amino and alcohol functions on the surface. Then, in a second step, ATRP initiator was grafted by reaction with bromoisobutyryl bromide. The efficiency of these reactions was confirmed by using colorimetric titration and X-ray photoelectron spectroscopy (XPS). Surface-initiated ATRP was performed in bulk using styrene monomer with CuBr/PMDETA catalytic system in the presence of a sacrificial initiator (ethyl 2-bromoisobutyrate). Good control of the polymerization was obtained as attested by comparison of polystyrene molar masses obtained in solution from sacrificial initiator with those obtained from the surface after cleavage. Wetting properties were found to vary systematically depending to the type of functionalization and grafting. Evolution of surface morphology according to reaction steps was investigated using atomic force microscopy (AFM). |
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Keywords: | Atom transfer radical polymerization (ATRP) Poly(ethylene terephthalate) Surface-initiated polymerization Grafting from Styrene |
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