Development of Novel Nonionic Surfactants with Reduction in Environmental Loading Instead of Ethylene Oxide

2016 Fiscal Year Final Research Report

• Project/Area Number: 26410194
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Green/Environmental chemistry
• Research Institution: Nara Women's University
• Principal Investigator: Yoshimura Tomokazu 奈良女子大学, 自然科学系, 教授 (10339111)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 非イオン界面活性剤 / 環境適合 / ポリオキシエチレン / ポリオキシプロピレン / 単一鎖長 / 表面張力 / 分子集合体

Outline of Final Research Achievements

Homogeneous polyoxypropylene (PO)-polyoxyethylene (EO) alkyl ether type nonionic surfactants comprising alkyl, EO, and PO chains with identical chain length distributions (CnEOxPOy; alkyl chain length n = 10, 12, 14, or 16; EO chain length x = 4, 6, or 8; and PO chain length y = 1, 2, or 3) were synthesized from homogeneous polyoxyethylene alkyl ether bromide and monosodium polyoxypropylene by Williamson ether synthesis. The adsorption and aggregation properties of these surfactants were characterized (cloud point, surface tension, dynamic light scattering, small-angle X-ray scattering, polarization microscopy, and cryogenic transmission electron microscopy) and compared to those of conventional homogeneous EO alkyl ether type nonionic surfactants (CnEOx).

Free Research Field

コロイド・界面化学