Dielectric Studies in a Smectic Liquid Crystal Catanionic Surfactant

• Type: Poster in a National Conference
• Date: 2010

Authors

M. Rodrigues (Author) FCUP; P. Simeão Carvalho (Author) FCUP; E. F. Marques (Author) FCUP

Conference National

Física 2010 - XVII Conferência Nacional de Física

Vila Real, Portugal, 1 a 3 de Setembro de 2010

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Abstract (EN): This study intends to present further research on the compound hexadecylpyridinium octylsulfate (PS), that belongs to a new class of surfactants – the catanionic surfactants – which present liquid crystalline phases. This compound was characterized by optical and low frequency dielectric relaxation experiments. The results show significant changes in the complex dielectric constant measurements at the phase transition temperatures, together with optical texture transformations, non-egordic behaviour and several relaxation modes whose dielectric amplitude suffer visible anomalies during the phase transitions.

Language: English

Type (Professor's evaluation): Scientific