Synthesis, Characterization, and Uses of Novel-Architecture Copolymers through Gamma Radiation Technique

Abstract:

Radiation processing has many advantages over other conventional methods. When using gamma radiation for material processing, no catalysts or additives are needed to initiate the reaction. Graft ing techniques normally include the preirradiation, as well as the mutual or the simultaneous method. Th e main advantage of this radiation-assisted method is relatively simple; surface graft ing of polymers has attracted great interest in the past few decades, as it allows the tailoring of surface properties of various polymer materials, and thus specifi c functionalities useful for many applications can be eff ectively produced. When polymers are exposed to ionizing irradiation, trapped radicals and peroxides or hydroperoxides are formed, and they are capable of initiating graft ing copolymerization reactions. Various graft -polymerization approaches have been developed, including direct graft polymerization of vinyl monomers already containing desirable functional groups, graft copolymerization of two (or more) diff erent types of monomers onto a polymer backbone, and graft polymerization of a precursor monomer that can be subsequently modifi ed. Th is chapter revises and focuses the recent advances in the synthesis and characterization of graft copolymers with new architecture prepared by means of gamma radiation. Also, it describes the potential use of these copolymers in the biomedical area.

Año de publicación:

2015

Keywords:

• Graft ing methods
• Copolymers
• Polymer characterization
• drug delivery
• Gamma radiation

Fuente:

scopus