Browsing by Subject "Dielectric spectroscopy"
Now showing items 1-5 of 5
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Effect of electrostatic interactions on the relaxation dynamics of pharmaceutical eutectics
(2019)In this paper, we investigate the temperature-dependent relaxation dynamics in the glassy and supercooled liquid state of dipolar and ionic eutectic mixtures made of two anesthetic agents (lidocaine and prilocaine) and ... -
Enhancement of the Physical Stability of Amorphous Sildenafil in a Binary Mixture, with either a Plasticizing or Antiplasticizing Compound
(2020)The main purpose of this paper was to evaluate the impact of both high- and low-Tg polymer additives on the physical stability of an amorphous drug, sildenafil (SIL). The molecular mobility of neat amorphous SIL was strongly ... -
Formation and development of nanometer-sized cybotactic clusters in bent-core nematic liquid crystalline compounds
(2018)Two homologue achiral bent-core liquid crystals (LCs), BCN66 and BCN84, in their nematic phases are studied by dielectric spectroscopy in the frequency range 10 Hz–10 MHz. In each of these compounds, two relaxation processes ... -
Green Synthesis of Lidocaine Ionic Liquids and Salts: Mechanisms of Formation and Interactions in the Crystalline and Supercooled States
(2020)Mechanochemistry has been recognized as an optimal route for the synthesis of ionic liquids incorporating active pharmaceutical ingredients (API-ILs) as it eliminates the need for large volumes of solvents and purification ... -
High-Pressure Dielectric Studies-a Way to Experimentally Determine the Solubility of a Drug in the Polymer Matrix at Low Temperatures
(2021)In this work, we employed broad-band dielectric spectroscopy to determine the solubility limits of nimesulide in the Kollidon VA64 matrix at ambient and elevated pressure conditions. Our studies confirmed that the solubility ...