Producción CyT
Congreso
Autoría
SCHROEDER, WALTER FABIAN
;
Silvana L. Asmussen
;
Wayne D. Cook
;
Claudia I. Vallo
Fecha
2011
Editorial y Lugar de Edición
2º Taller de Órganos Artificiales, Biomateria
ISSN
978-987-27301-0-9
Resumen
Información suministrada por el agente en
SIGEVA
The efficiency of 4,4-bis(N,N-diethylamino) benzophenone (DEABP) for the polymerization of dimethacrylate monomers in thick sections (1-2 mm) was studied. DEABP represents a complete initiating system as it contains both ketone and amine functional groups. During irradiation, DEABP photobleaches at a fast rate causing deeper penetration of the light through the underlying layers, but the photoinitiation efficiency is relatively poor. Irradiation of BisTEG/DEABP at 365 nm results in a slow polym...
The efficiency of 4,4-bis(N,N-diethylamino) benzophenone (DEABP) for the polymerization of dimethacrylate monomers in thick sections (1-2 mm) was studied. DEABP represents a complete initiating system as it contains both ketone and amine functional groups. During irradiation, DEABP photobleaches at a fast rate causing deeper penetration of the light through the underlying layers, but the photoinitiation efficiency is relatively poor. Irradiation of BisTEG/DEABP at 365 nm results in a slow polymerization rate and a reduced monomer conversion for thick sections due to the light attenuation caused by the high absorptivity of DEABP and photolysis products.
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Palabras Clave
FRONTAL PHOTOPOLYMERIZATIONPHOTOBLEACHINGDIMETHACRYLATEBENZOPHENONE