info:eu-repo/semantics/article
Mesomorphic properties of linear and branched new triphenylene-based poly(ester-ether)s
Fecha
2020-03Registro en:
Gutierrez Suburu, Matias Ezequiel; Cecchi, Florencia; D'accorso, Norma Beatriz; Cukiernik, Fabio Daniel; Mesomorphic properties of linear and branched new triphenylene-based poly(ester-ether)s; John Wiley & Sons Inc.; Journal of Polymer Science; 58; 8; 3-2020; 1163-1176
2642-4150
2642-4169
CONICET Digital
CONICET
Autor
Gutierrez Suburu, Matias Ezequiel
Cecchi, Florencia
D'accorso, Norma Beatriz
Cukiernik, Fabio Daniel
Resumen
A series of main chain discotic liquid crystal polymers, synthesized following a new approach based on the incorporation of triphenylene units in both comonomers, show ordered columnar mesophases in a very wide thermal range, including room temperature. The introduction of branching points based on the same kind of triphenylene units increases their thermal range and gives rise to glassy low-temperature phases. Room temperature extrusion of these polymers yields fibers with molecules oriented perpendicular to the mechanical stress, and an orientational order parameter close to 0.5, which slightly increases for branched polymers.