I Polietere solfoni rappresentano un'importante famiglia di tecnopolimeri aventi numerosissimi risvolti applicativi. Il loro carattere idrofobo ne limita l'utilizzo in alcuni settori; questo gravoso problema, molto studiato in letteratura, può essere ovviato grazie a procedure che limitino l'idrofobia del PES. In questo lavoro vengono esposti gli approcci sintetici e di modifica sviluppati dal gruppo di ricerca. L'efficacia delle modifiche è stata testata con applicazioni specifiche riguardo selettività nei confronti di metalli pesanti e attività antibatterica.
Aromatic poly(ether sulfone)s (PES)s are engineering thermoplastic materials with excellent chemical and thermal stability as well as high glass transition temperature, excellent strength and flexibility, transparency, as well as a good film forming properties. PESs have obtained wide use in many fields, both scientific and industrial: separation membranes (solid-gas, solid-liquid), metal- metal adhesives, composites, toughening agents for thermosetting resins [1, 2], membranes for proteins recovery. Lack of hydrophilic groups and the closing arrangement of macromolecular chains lead to the poor hydrophilicity for PES. One way to avoid this could be to make the membrane partially hydrophilic. A wide range of PES based copolymers was synthesized and characterized, exploiting various reaction paths. The insertion of carboxyl and sulfonic groups and their effects on the behaviors of the polymers was verified and applied to the engineering of different kind of membranes for different applications.
SYNTHESIS AND CHARACTERIZATION OF POLYMERIC MEMBRANES
Andrea A Scamporrino;Filippo Samperi;Concetto Puglisi;Sandro Dattilo;
2020
Abstract
Aromatic poly(ether sulfone)s (PES)s are engineering thermoplastic materials with excellent chemical and thermal stability as well as high glass transition temperature, excellent strength and flexibility, transparency, as well as a good film forming properties. PESs have obtained wide use in many fields, both scientific and industrial: separation membranes (solid-gas, solid-liquid), metal- metal adhesives, composites, toughening agents for thermosetting resins [1, 2], membranes for proteins recovery. Lack of hydrophilic groups and the closing arrangement of macromolecular chains lead to the poor hydrophilicity for PES. One way to avoid this could be to make the membrane partially hydrophilic. A wide range of PES based copolymers was synthesized and characterized, exploiting various reaction paths. The insertion of carboxyl and sulfonic groups and their effects on the behaviors of the polymers was verified and applied to the engineering of different kind of membranes for different applications.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
