Articolo in rivista, 2003,

Anisotropic Thermosets from Liquid Crystalline Azomethynic Epoxy Resins and Primary Aromatic Diamines

Castell P. 1, Serra A. 2, Galià M. 3, Giamberini M. 4, Carfagna C. 5

1 Universitat Rovira i Virgili Tarragona Spain, 2 Universitat Rovira i Virgili Tarragona Spain, 3 Universitat Rovira i Virgili Tarragona Spain, 4 CNR, 5 UNI "Federico II" Napoli

Novel epoxy terminated monomers based on imine groups were synthesized and their mesogenic properties studied. Aliphatic spacers of different lengths were introduced between the rigid unit and glycidylic group, and their liquid crystalline behavior was examined.They were reacted with primary aromatic amines inside a magnetic field so that the formation of anisotropic networks could be investigated. Thermosets with locked nematic textures were obtained in all cases. The influence of a 7.1 T magnetic field on the macroscopic orientation of these materials was studied and the mechanichal properties of the resulting networks were evaluated by dynamic-mechanical analysis.

Keywords

LC polymers, LC thermosets, epoxy resins, oriented thermose

CNR authors

Giamberini Marta

CNR institutes

IMCB – Istituto per i materiali compositi e biomedici