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Surface Functionalization of Poly(ethylene terephthalate) Film and Membrane by Controlled Wet Chemistry: Chemical Characterization of Carboxylated Surfaces

Marchand-Brynaert, Jacqueline ; Deldime, Michéle ; Dupont, Isabelle ; Dewez, Jean-Luc ; Schneider, Yves-Jacques

Journal of colloid and interface science, 1995-07, Vol.173 (1), p.236-244 [Periódico revisado por pares]

San Diego, CA: Elsevier Inc

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  • Título:
    Surface Functionalization of Poly(ethylene terephthalate) Film and Membrane by Controlled Wet Chemistry: Chemical Characterization of Carboxylated Surfaces
  • Autor: Marchand-Brynaert, Jacqueline ; Deldime, Michéle ; Dupont, Isabelle ; Dewez, Jean-Luc ; Schneider, Yves-Jacques
  • Assuntos: Chemistry ; Colloidal state and disperse state ; Exact sciences and technology ; General and physical chemistry ; Membranes ; Solid-liquid interface ; Surface physical chemistry
  • É parte de: Journal of colloid and interface science, 1995-07, Vol.173 (1), p.236-244
  • Descrição: Surface functionalization of poly(ethylene terephthalate) (PET) film or track-etched membrane was performed using the methods of organic synthesis conducted at the solid-liquid interface. Basic hydrolysis in aqueous acetonitrile followed by permanganate oxidation in diluted sulfuric acid created new carboxylic chain-ends. These reactive functions were assayed as follows: (i) activation with water soluble carbodiimide; (ii) coupling to 3 H-labeled amino acids; and (iii) liquid scintillation counting of the sample-associated radioactivity. Some samples were also analyzed by X-ray photoelectron spectroscopy. Depending on the experimental conditions (temperature and duration of treatment), about 1-2% of the surface repeated units could be functionalized without deterioration of the polymer bulk. This study establishes the best conditions for the covalent anchorage of bioactive substances on the PET surface.
  • Editor: San Diego, CA: Elsevier Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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