Development of new drag reduction agent and elucidation of molecular mechanism for saving energy

2016 Fiscal Year Final Research Report

• Project/Area Number: 26410193
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Green/Environmental chemistry
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: Taga Keijiro 名古屋工業大学, 工学(系)研究科(研究院), 教授 (30163330)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 流動抵抗低減 / 省エネルギー / 界面活性剤 / ひも状ミセル / 電気伝導度法 / 流体粘弾性法 / 親水基拡張型 / 抵抗低減効果の低温化

Outline of Final Research Achievements

We synthesized new surfactants as a drag reducing agent for circulating system from the viewpoint of low environmental burden. We focused on their characteristics such as alkyl chain length and structure of hydrophilic group. The properties in aqueous solution were investigated using various physicochemical methods (Electric Conductivity (EC), Surface Tension measurement (STm), and fluid viscoelasticity (Vortex Inhibition (VI) and Viscoelastic Recoil (VR)). The solution of synthesized surfactants showed quite low critical micelle concentration (CMC) of μmol/kg order from EC and STm measurements, and the formation of worm-like micelle was promoted by the organic additive. Compared to the normal drag reducing surfactant, synthesized surfactants showed VI and VR on the wide temperature range. Among those surfactants, we also succeeded in the development of surfactants showing VI and VR at low temperature less than 0℃ in the ethylene glycol-water solution.

Free Research Field

コロイド化学　界面化学　構造化学