title: Synthesis and properties of green sustainable carbonate-type nonionics containing polyoxyethylene chains.
abstract: 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.
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku-hu, Yokohama, Japan.
authors.forename: Taisuke
authors.initials: T
authors.lastname: Banno
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sato
authors.forename: Takayuki
authors.initials: T
authors.lastname: Tsuda
authors.forename: Shuichi
authors.initials: S
authors.lastname: Matsumura
mesh_terms: D001673:Biodegradation, Environmental; D002254:Carbonates; D002384:Catalysis; D008049:Lipase; D008823:Micelles; D011092:Polyethylene Glycols / Q000138:chemical synthesis* / Q000737:chemistry; D012722:Sewage; D013500:Surface Tension; D013501:Surface-Active Agents / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D002254:Carbonates; D008823:Micelles; D012722:Sewage; D013501:Surface-Active Agents; D011092:Polyethylene Glycols; D008049:Lipase