Acoustical Studies of Molecular Interactions in the Solution of Methyl Cobalamine Drug at Different Temperatures and Concentrations
oleh: Ritesh R. Naik, Sheshrao V. Bawankar
| Format: | Article |
|---|---|
| Diterbitkan: | Universidade Federal de Mato Grosso do Sul 2014-07-01 |
Deskripsi
<p>In the present study, ultrasonic velocity (U), density (ρ), and viscosity (η) have been measured at frequency 1 MHz in the binary mixtures of methyl cobalamine with water in the concentration range (0.1 to 0.0125%) at 303 K, 308 K, and 313 K using a multi-frequency ultrasonic interferometer. The measured values of density, ultrasonic velocity, and viscosity have been used to estimate the acoustical parameters, namely adiabatic compressibility (β<sub>a</sub>), relaxation time (τ), acoustic impedance (z), free length (L<sub>f</sub>), free volume (V<sub>f</sub>), internal pressure (Π<sub>i</sub>), and Wada’s constant (W). The obtained results support the complex formation, molecular association by intermolecular hydrogen bonding in the binary liquid mixtures.</p>