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Fonctionnalisation de Surfaces
Aminolysis of PET fibers with different diamines gives amino functional groups on the surface. The effects of temperature, reaction time, diamine concentration and solvent employed for the grafting were studied. Aminolysis affects greatly the geometry and surface morphology of PET fibers as observed by scanning electronic microscopy (SEM) and atomic force microscopy (AFM) in tapping mode. A decrease of fibers diameter and an increase of surface heterogeneity and roughness due to chemical degradation is observed. Amino groups on the surface were used to prepare glycosylated fibers by reductive amination or amidation with different carbohydrates as maltose, maltotriose and maltohexaose. These surfaces could benefit to a wide range of applications in the biomedical field.
Chemical surface Modification of Poly(ethylene terephthalate) Fibers by Aminolysis and Grafting of Carbohydrates. Loïc BECH, Thierry MEYLHEUC, Bénédicte LEPOITTEVIN, Philippe ROGER Journal of Polymer Science: Part A: Polymer Chemistry, 2007, 45, 2172