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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Biomateriais Aplicados Ao Desenvolvimento De Sistemas Terapeuticos Avancados Título del capítulo: Gamma and UV radiation for molecular grafting and design of matrices for therapeutic purposes
Polymers have become prevalent in many commercial products due to their
easy manufacture and relative low cost (compared with metals and ceramic
products). The properties of these materials can be tailored by
copolymerization with others polymers in order to give them a variety of
engineering and scientific uses. Copolymerization via gamma-rays is an
interesting method to modify polymeric matrices of biomedical interest.
It has been used to functionalize the surfaces of polymers with
different chemical groups, as well as to graft new polymer chains onto
existing functional materials to alter their properties. Usually,
polymerization using gamma-rays proceeds via the free radical initiation
mechanism but without the use of chemical initiators. Grafting methods
normally include the oxidative preirradiation, as well as the mutual or
the simultaneous method. This chapter describes the different grafting
techniques and the effect of various parameters in the grafting
polymerization initiated with gamma radiation. Also, it describes the
different analytical techniques used for the characterization of graft
copolymers.
