Viscosities and excess viscosities of aqueous solutions of some diethanolamines

✍ Scribed by Faisal Islam Chowdhury; Shamim Akhtar; Muhammad A. Saleh

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 812 KB
• Volume: 155
• Category: Article
• ISSN: 0167-7322
• DOI: 10.1016/j.molliq.2010.03.015

✦ Synopsis

Viscosities, η, of aqueous diethanolamine (DEA), methyldiethanolamine (MDEA), ethyldiethanolamine (EDEA) and n-butyldiethanolamine (BDEA) solutions were determined at an interval of 5 K between 303.15 and 323.15 K at different compositions in the range 0 ≤ x 2 ≤ 1, where x 2 is the mole fraction of alkanolamines. Excess viscosities, η E , have been found to be positive for all systems in the whole range of composition at all temperatures. The heights of maxima in η E vary as W + DEA N N W + MDEA N W + EDEA N W + BDEA. The effect of temperature on both η and η E is significantly largethe more the temperature the less the viscosity as well as the excess viscosity. For all the systems, η and η E data have been fitted well with six degree polynomial and Redlich-Kister equations, respectively.