ACOSTA RODOLFO HECTOR
Congresos y reuniones científicas
Título:
Influencia de los entrecruzamientos químicos y físicos en Redes modelo de Polidimetilsiloxano. Un estudio por Resonancia Magnética Nuclear
Autor/es:
R. H. ACOSTA; G.A. MONTI; D. A. VEGA; M.A. VILLAR; E.M. VALLÉS
Lugar:
La Falda, Córdoba
Reunión:
Congreso; Solidos 2007; 2007
Resumen:
The equivalence
of chemical cross-link points and physical entanglement of polymer networks
with pendant chains at low concentrations and small relative variations of
pendant chain molecular weight for trifunctional and tetrafunctional cross-link
points were analyzed. Changes induced by these types
of defects in the residual dipolar couplings obtained by double quantum nuclear
magnetic resonance are related to the behavior of the elastic modulus, in
the limit of low frequencies obtained by rheological measurements.
