INTEC 05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Crosslink kinetics and properties of styrene based copolymers
Autor/es:
A. BARBARINI; D.M. MARTINO
Lugar:
Colorado School of Mines, Golden, CO, USA
Reunión:
Workshop; ACS Summer School on Green Chemistry and Sustainable Energy; 2009
Institución organizadora:
ACS
Resumen:
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The effect of irradiation light
intensity, film thickness and polymer composition upon photo-irradiation of
water-soluble polymers containing thymine was studied. The curing process
involved the irradiation of the copolymer films with a short wavelength UV (254
nm) for different times leading to film immobilization on the substrate. The
light-induced crosslinking reaction was followed by UV-vis spectroscopy and the
immobilization point was determined. The kinetics of the crosslinking process
pointed to be a second order process. The effect of irradiation dose is similar
to the typical behavior of photo-resists: the degree of crosslink increases
over the time until it reaches saturation. The effect of film thickness was as
expected, the thicker the film the slower the immobilization of the polymer on
the substrate. It was demonstrated that by varying these parameters one could
control the crosslinking rate of the polymer
