Wetting Properties of Seven Phosphonium Cation-Based Ionic Liquids.

Blanco, D., Bartolomé, M., Ramajo, B., Viesca Rodriguez, J.L., Gonzalez, R. and Hernandez Battez, A., 2016. Wetting Properties of Seven Phosphonium Cation-Based Ionic Liquids. Industrial and Engineering Chemistry Research, 55 (36), 9594 - 9602.

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DOI: 10.1021/acs.iecr.6b00821

Abstract

This paper studies the wetting properties of seven phosphonium cation-based ionic liquids: trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P66614][(iC8)2PO2], trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate [P66614][BEHP], trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl) imide [P66614][NTf2], tributyltetradecylphosphonium dodecylbenzenesulfonate [P44414][DBS], tributylethylphosphonium diethylphosphate [P4442][DEP], trihexyltetradecylphosphonium dicyanamide [P66614][DCA], and trihexyltetradecylphosphonium chloride [P66614][Cl]. The surface tension was analyzed using the Gibbs free energy in a temperature range of 293-353 K, obtaining the expected linear decrease with temperature rise. The contact angle was measured on four different surfaces (AISI 52100 steel, CrN, TiN, and ZrN) and all liquids with high surface tensions interacting with hydrophobic systems displayed high contact angles as expected. The polarity fraction (PF) and the spreading parameter (SP) were estimated to complete and improve the wetting characterization of these ionic liquids, finding TiN-[P66614][BEHP] and TiN-[P66614][(iC8)2PO2] as the most favorable surface-ionic liquid combinations from a wetting point of view.

Item Type:Article
ISSN:0888-5885
Subjects:UNSPECIFIED
Group:Faculty of Science & Technology
ID Code:26189
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:16 Jan 2017 15:09
Last Modified:16 Jan 2017 15:09

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