Banno Taisuke, Sato Hiroshi, Tsuda Takayuki, Matsumura Shuichi
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku-hu, Yokohama, Japan.
J Oleo Sci. 2011;60(3):117-26. doi: 10.5650/jos.60.117.
A series of polyoxyethylene surfactants containing carbonate linkages as biodegradable and chemically recyclable segments was designed and synthesized by a green process. A two-step carbonate exchange reaction was used: dimethyl or diphenyl carbonate was reacted with 1-alkanol, and the product was reacted with poly (ethylene) glycol in the presence of a lipase or chemical catalyst. The obtained carbonate-type nonionics exhibited good surface-active properties such as a low critical micelle concentration value and a surface tension lowering action. They were readily biodegraded by activated sludge, furthermore, could be chemical recycled using a lipase.
